<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2025 Workiva-->
<!--r:468f9f43-8754-4e70-9204-0f7311a9eba6,g:abfd560b-f41f-4d5c-b545-55988a1df1c4-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodStartLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodStartLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/netLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd#netLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedNetLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedNetLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTerseLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodEndLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodEndLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTotalLabel"/>
  <link:labelLink xlink:role="http://www.xbrl.org/2003/role/link" xlink:type="extended">
    <link:label id="lab_dec_HedgeModifications_label_en" xlink:label="lab_dec_HedgeModifications" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Hedge modifications</link:label>
    <link:label id="lab_dec_HedgeModifications_documentation_en" xlink:label="lab_dec_HedgeModifications" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Hedge modifications</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dec_HedgeModifications" xlink:href="213800YR9TFRVHPGOS67-2024-12-31.xsd#dec_HedgeModifications"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dec_HedgeModifications" xlink:to="lab_dec_HedgeModifications" xlink:type="arc" order="1"/>
    <link:label id="lab_dec_ReserveOfShareBasedPaymentsAndOtherReserves_label_en" xlink:label="lab_dec_ReserveOfShareBasedPaymentsAndOtherReserves" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Reserve of share-based payments and other reserves [Member]</link:label>
    <link:label id="lab_dec_ReserveOfShareBasedPaymentsAndOtherReserves_documentation_en" xlink:label="lab_dec_ReserveOfShareBasedPaymentsAndOtherReserves" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Reserve of share-based payments and other reserves</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dec_ReserveOfShareBasedPaymentsAndOtherReserves" xlink:href="213800YR9TFRVHPGOS67-2024-12-31.xsd#dec_ReserveOfShareBasedPaymentsAndOtherReserves"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dec_ReserveOfShareBasedPaymentsAndOtherReserves" xlink:to="lab_dec_ReserveOfShareBasedPaymentsAndOtherReserves" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss_bbb45449-3120-4690-8d74-ce1a5975953f_negatedLabel_en" xlink:label="lab_ifrs-full_GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Gains (losses) on financial assets at fair value through profit or loss</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss" xlink:to="lab_ifrs-full_GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DomicileOfEntity_7579119b-c5b5-4f84-b26c-87002b4480c5_terseLabel_en" xlink:label="lab_ifrs-full_DomicileOfEntity" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en">Domicile of entity</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DomicileOfEntity" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DomicileOfEntity"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DomicileOfEntity" xlink:to="lab_ifrs-full_DomicileOfEntity" xlink:type="arc" order="1"/>
    <link:label id="lab_dec_IssuanceOfEBTSharesEquityCompensation_label_en" xlink:label="lab_dec_IssuanceOfEBTSharesEquityCompensation" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Issuance of EBT shares, equity compensation</link:label>
    <link:label id="lab_dec_IssuanceOfEBTSharesEquityCompensation_documentation_en" xlink:label="lab_dec_IssuanceOfEBTSharesEquityCompensation" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Issuance of EBT shares, equity compensation</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dec_IssuanceOfEBTSharesEquityCompensation" xlink:href="213800YR9TFRVHPGOS67-2024-12-31.xsd#dec_IssuanceOfEBTSharesEquityCompensation"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dec_IssuanceOfEBTSharesEquityCompensation" xlink:to="lab_dec_IssuanceOfEBTSharesEquityCompensation" xlink:type="arc" order="1"/>
    <link:label id="lab_dec_IncreaseDecreaseThroughTreasuryShareTransactionsShareBuybackProgrammeEquity_d7e34299-cbe3-4fe7-90d1-fb0cf62755a1_negatedTerseLabel_en" xlink:label="lab_dec_IncreaseDecreaseThroughTreasuryShareTransactionsShareBuybackProgrammeEquity" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en">Increase (decrease) through treasury share transactions, share buyback programme, equity</link:label>
    <link:label id="lab_dec_IncreaseDecreaseThroughTreasuryShareTransactionsShareBuybackProgrammeEquity_label_en" xlink:label="lab_dec_IncreaseDecreaseThroughTreasuryShareTransactionsShareBuybackProgrammeEquity" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Increase (decrease) through treasury share transactions, share buyback programme, equity</link:label>
    <link:label id="lab_dec_IncreaseDecreaseThroughTreasuryShareTransactionsShareBuybackProgrammeEquity_documentation_en" xlink:label="lab_dec_IncreaseDecreaseThroughTreasuryShareTransactionsShareBuybackProgrammeEquity" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Increase (decrease) through treasury share transactions, share buyback programme, equity</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dec_IncreaseDecreaseThroughTreasuryShareTransactionsShareBuybackProgrammeEquity" xlink:href="213800YR9TFRVHPGOS67-2024-12-31.xsd#dec_IncreaseDecreaseThroughTreasuryShareTransactionsShareBuybackProgrammeEquity"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dec_IncreaseDecreaseThroughTreasuryShareTransactionsShareBuybackProgrammeEquity" xlink:to="lab_dec_IncreaseDecreaseThroughTreasuryShareTransactionsShareBuybackProgrammeEquity" xlink:type="arc" order="1"/>
    <link:label id="lab_dec_PluggingCostsOfAssetRetirementObligations_label_en" xlink:label="lab_dec_PluggingCostsOfAssetRetirementObligations" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Plugging costs of asset retirement obligations</link:label>
    <link:label id="lab_dec_PluggingCostsOfAssetRetirementObligations_documentation_en" xlink:label="lab_dec_PluggingCostsOfAssetRetirementObligations" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Plugging costs of asset retirement obligations</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dec_PluggingCostsOfAssetRetirementObligations" xlink:href="213800YR9TFRVHPGOS67-2024-12-31.xsd#dec_PluggingCostsOfAssetRetirementObligations"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dec_PluggingCostsOfAssetRetirementObligations" xlink:to="lab_dec_PluggingCostsOfAssetRetirementObligations" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInInvestingActivitiesAbstract_4b0fa6fe-a2ea-4c99-a8d2-79209e1e5ead_terseLabel_en" xlink:label="lab_ifrs-full_CashFlowsFromUsedInInvestingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en">Cash flows from (used in) investing activities [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInInvestingActivitiesAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivitiesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInInvestingActivitiesAbstract" xlink:to="lab_ifrs-full_CashFlowsFromUsedInInvestingActivitiesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_dec_ProceedsFromLeaseModifications_label_en" xlink:label="lab_dec_ProceedsFromLeaseModifications" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Proceeds from lease modifications</link:label>
    <link:label id="lab_dec_ProceedsFromLeaseModifications_documentation_en" xlink:label="lab_dec_ProceedsFromLeaseModifications" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Proceeds from lease modifications</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dec_ProceedsFromLeaseModifications" xlink:href="213800YR9TFRVHPGOS67-2024-12-31.xsd#dec_ProceedsFromLeaseModifications"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dec_ProceedsFromLeaseModifications" xlink:to="lab_dec_ProceedsFromLeaseModifications" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities_3cffb8b3-f74d-404e-bf63-6b6eb5ba7519_terseLabel_en" xlink:label="lab_ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en">Description of nature of entity's operations and principal activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities" xlink:to="lab_ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_LegalFormOfEntity_2ce3bce4-fbeb-46fb-8b6e-3b16f7fc5c40_terseLabel_en" xlink:label="lab_ifrs-full_LegalFormOfEntity" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en">Legal form of entity</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LegalFormOfEntity" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_LegalFormOfEntity"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_LegalFormOfEntity" xlink:to="lab_ifrs-full_LegalFormOfEntity" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NoncurrentLiabilitiesAbstract_c7b1f676-9f32-4e7d-9de3-4c20533c3427_terseLabel_en" xlink:label="lab_ifrs-full_NoncurrentLiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en">Non-current liabilities [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentLiabilitiesAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncurrentLiabilitiesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NoncurrentLiabilitiesAbstract" xlink:to="lab_ifrs-full_NoncurrentLiabilitiesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_dec_CancellationSettlementOfWarrantsNetFinancingActivities_label_en" xlink:label="lab_dec_CancellationSettlementOfWarrantsNetFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Cancellation (settlement) of warrants, net, financing activities</link:label>
    <link:label id="lab_dec_CancellationSettlementOfWarrantsNetFinancingActivities_documentation_en" xlink:label="lab_dec_CancellationSettlementOfWarrantsNetFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Cancellation (settlement) of warrants, net, financing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dec_CancellationSettlementOfWarrantsNetFinancingActivities" xlink:href="213800YR9TFRVHPGOS67-2024-12-31.xsd#dec_CancellationSettlementOfWarrantsNetFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dec_CancellationSettlementOfWarrantsNetFinancingActivities" xlink:to="lab_dec_CancellationSettlementOfWarrantsNetFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CurrentAssetsAbstract_d54b71fe-a43c-4485-b6c4-ce245e85357a_terseLabel_en" xlink:label="lab_ifrs-full_CurrentAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en">Current assets [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentAssetsAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentAssetsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CurrentAssetsAbstract" xlink:to="lab_ifrs-full_CurrentAssetsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForIncreaseInOtherProvisionsArisingFromPassageOfTime_9a7de5ce-a1b5-48b7-83a0-ee66b872aa32_negatedLabel_en" xlink:label="lab_ifrs-full_AdjustmentsForIncreaseInOtherProvisionsArisingFromPassageOfTime" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Adjustments for increase in other provisions arising from passage of time</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForIncreaseInOtherProvisionsArisingFromPassageOfTime" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdjustmentsForIncreaseInOtherProvisionsArisingFromPassageOfTime"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AdjustmentsForIncreaseInOtherProvisionsArisingFromPassageOfTime" xlink:to="lab_ifrs-full_AdjustmentsForIncreaseInOtherProvisionsArisingFromPassageOfTime" xlink:type="arc" order="1"/>
    <link:label id="lab_dec_LossOnEarlyRetirementOfDebt_label_en" xlink:label="lab_dec_LossOnEarlyRetirementOfDebt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Loss on early retirement of debt</link:label>
    <link:label id="lab_dec_LossOnEarlyRetirementOfDebt_documentation_en" xlink:label="lab_dec_LossOnEarlyRetirementOfDebt" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Loss on early retirement of debt</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dec_LossOnEarlyRetirementOfDebt" xlink:href="213800YR9TFRVHPGOS67-2024-12-31.xsd#dec_LossOnEarlyRetirementOfDebt"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dec_LossOnEarlyRetirementOfDebt" xlink:to="lab_dec_LossOnEarlyRetirementOfDebt" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities_45ac3930-d336-42d0-9144-c4c8b01c7017_totalLabel_en" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en">Cash flows from (used in) operating activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_dec_HedgeModificationsAssociatedWithIssuanceOfNotesFinancingActivities_label_en" xlink:label="lab_dec_HedgeModificationsAssociatedWithIssuanceOfNotesFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Hedge modifications associated with ABS Notes</link:label>
    <link:label id="lab_dec_HedgeModificationsAssociatedWithIssuanceOfNotesFinancingActivities_documentation_en" xlink:label="lab_dec_HedgeModificationsAssociatedWithIssuanceOfNotesFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Hedge modifications associated with issuance of notes, financing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dec_HedgeModificationsAssociatedWithIssuanceOfNotesFinancingActivities" xlink:href="213800YR9TFRVHPGOS67-2024-12-31.xsd#dec_HedgeModificationsAssociatedWithIssuanceOfNotesFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dec_HedgeModificationsAssociatedWithIssuanceOfNotesFinancingActivities" xlink:to="lab_dec_HedgeModificationsAssociatedWithIssuanceOfNotesFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_dec_IncreaseDecreaseInRestrictedCash_label_en" xlink:label="lab_dec_IncreaseDecreaseInRestrictedCash" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">(Increase) decrease in restricted cash</link:label>
    <link:label id="lab_dec_IncreaseDecreaseInRestrictedCash_documentation_en" xlink:label="lab_dec_IncreaseDecreaseInRestrictedCash" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">(Increase) decrease in restricted cash</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dec_IncreaseDecreaseInRestrictedCash" xlink:href="213800YR9TFRVHPGOS67-2024-12-31.xsd#dec_IncreaseDecreaseInRestrictedCash"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dec_IncreaseDecreaseInRestrictedCash" xlink:to="lab_dec_IncreaseDecreaseInRestrictedCash" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NameOfParentEntity_1892b84c-a511-4865-bfd8-ad906412e23b_terseLabel_en" xlink:label="lab_ifrs-full_NameOfParentEntity" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en">Name of parent entity</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NameOfParentEntity" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NameOfParentEntity"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NameOfParentEntity" xlink:to="lab_ifrs-full_NameOfParentEntity" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities_be965b74-eb24-4ea3-ae28-541d73c78623_totalLabel_en" xlink:label="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en">Cash flows from (used in) financing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:to="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_GrossProfit_7cff2022-3c71-4f6a-b5cc-0f045e1b38b7_totalLabel_en" xlink:label="lab_ifrs-full_GrossProfit" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en">Gross profit</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GrossProfit" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_GrossProfit"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_GrossProfit" xlink:to="lab_ifrs-full_GrossProfit" xlink:type="arc" order="1"/>
    <link:label id="lab_dec_PaymentsToAcquireOrRedeemEntitysSharesShareBuybackProgramFinancingActivities_label_en" xlink:label="lab_dec_PaymentsToAcquireOrRedeemEntitysSharesShareBuybackProgramFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Payments to acquire or redeem entity's shares, share buyback program, financing activities</link:label>
    <link:label id="lab_dec_PaymentsToAcquireOrRedeemEntitysSharesShareBuybackProgramFinancingActivities_documentation_en" xlink:label="lab_dec_PaymentsToAcquireOrRedeemEntitysSharesShareBuybackProgramFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Payments to acquire or redeem entity's shares, share buyback program, financing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dec_PaymentsToAcquireOrRedeemEntitysSharesShareBuybackProgramFinancingActivities" xlink:href="213800YR9TFRVHPGOS67-2024-12-31.xsd#dec_PaymentsToAcquireOrRedeemEntitysSharesShareBuybackProgramFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dec_PaymentsToAcquireOrRedeemEntitysSharesShareBuybackProgramFinancingActivities" xlink:to="lab_dec_PaymentsToAcquireOrRedeemEntitysSharesShareBuybackProgramFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AssetsAbstract_7dacb5d9-2c86-4782-86c7-f8bb76f65723_terseLabel_en" xlink:label="lab_ifrs-full_AssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en">Assets [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AssetsAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AssetsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AssetsAbstract" xlink:to="lab_ifrs-full_AssetsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PrincipalPlaceOfBusiness_8fee92ab-2cfb-4739-8fe4-7a098b0a8f84_terseLabel_en" xlink:label="lab_ifrs-full_PrincipalPlaceOfBusiness" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en">Principal place of business</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PrincipalPlaceOfBusiness" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_PrincipalPlaceOfBusiness"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PrincipalPlaceOfBusiness" xlink:to="lab_ifrs-full_PrincipalPlaceOfBusiness" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CountryOfIncorporation_0310310e-a024-46bb-970b-a94647401d54_terseLabel_en" xlink:label="lab_ifrs-full_CountryOfIncorporation" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en">Country of incorporation</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CountryOfIncorporation" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CountryOfIncorporation"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CountryOfIncorporation" xlink:to="lab_ifrs-full_CountryOfIncorporation" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInInvestingActivities_4a1c5304-558a-4c19-be76-795106b86645_totalLabel_en" xlink:label="lab_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en">Cash flows from (used in) investing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:to="lab_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ComponentsOfEquityAxis_346db2ff-4ac4-4d31-940d-3c7e7c073959_terseLabel_en" xlink:label="lab_ifrs-full_ComponentsOfEquityAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en">Components of equity [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComponentsOfEquityAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ComponentsOfEquityAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ComponentsOfEquityAxis" xlink:to="lab_ifrs-full_ComponentsOfEquityAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CurrentLiabilitiesAbstract_722e40ae-6c14-4f7a-881e-eba908c28574_terseLabel_en" xlink:label="lab_ifrs-full_CurrentLiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en">Current liabilities [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentLiabilitiesAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentLiabilitiesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CurrentLiabilitiesAbstract" xlink:to="lab_ifrs-full_CurrentLiabilitiesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NoncurrentAssetsAbstract_05f75373-ef9e-4b33-b37d-489cd92f4687_terseLabel_en" xlink:label="lab_ifrs-full_NoncurrentAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en">Non-current assets [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentAssetsAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncurrentAssetsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NoncurrentAssetsAbstract" xlink:to="lab_ifrs-full_NoncurrentAssetsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NameOfReportingEntityOrOtherMeansOfIdentification_7fe6ed5b-0866-48a3-95ff-bbe8db043415_terseLabel_en" xlink:label="lab_ifrs-full_NameOfReportingEntityOrOtherMeansOfIdentification" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en">Name of reporting entity or other means of identification</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NameOfReportingEntityOrOtherMeansOfIdentification" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NameOfReportingEntityOrOtherMeansOfIdentification"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NameOfReportingEntityOrOtherMeansOfIdentification" xlink:to="lab_ifrs-full_NameOfReportingEntityOrOtherMeansOfIdentification" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_EquityAndLiabilitiesAbstract_eb8bf4a4-52fd-4cf9-a78c-59ff651b088a_terseLabel_en" xlink:label="lab_ifrs-full_EquityAndLiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en">Equity and liabilities [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_EquityAndLiabilitiesAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EquityAndLiabilitiesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_EquityAndLiabilitiesAbstract" xlink:to="lab_ifrs-full_EquityAndLiabilitiesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents_75970b06-9213-4c12-b795-8e47420d7a41_totalLabel_en" xlink:label="lab_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en">Increase (decrease) in cash and cash equivalents after effect of exchange rate changes</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IncreaseDecreaseInCashAndCashEquivalents"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:to="lab_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:type="arc" order="1"/>
    <link:label id="lab_dec_IncreaseDecreaseThroughCancellationOfWarrantsEquity_label_en" xlink:label="lab_dec_IncreaseDecreaseThroughCancellationOfWarrantsEquity" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Increase (decrease) through cancellation of warrants, equity</link:label>
    <link:label id="lab_dec_IncreaseDecreaseThroughCancellationOfWarrantsEquity_documentation_en" xlink:label="lab_dec_IncreaseDecreaseThroughCancellationOfWarrantsEquity" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Increase (decrease) through cancellation of warrants, equity</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dec_IncreaseDecreaseThroughCancellationOfWarrantsEquity" xlink:href="213800YR9TFRVHPGOS67-2024-12-31.xsd#dec_IncreaseDecreaseThroughCancellationOfWarrantsEquity"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dec_IncreaseDecreaseThroughCancellationOfWarrantsEquity" xlink:to="lab_dec_IncreaseDecreaseThroughCancellationOfWarrantsEquity" xlink:type="arc" order="1"/>
    <link:label id="lab_dec_PrepaymentChargeOnEarlyRetirementOfDebtFinancingActivities_4694c9cb-99b6-4eeb-a17b-f431f8cb8ca7_negatedLabel_en" xlink:label="lab_dec_PrepaymentChargeOnEarlyRetirementOfDebtFinancingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Prepayment charge on early retirement of debt, financing activities</link:label>
    <link:label id="lab_dec_PrepaymentChargeOnEarlyRetirementOfDebtFinancingActivities_label_en" xlink:label="lab_dec_PrepaymentChargeOnEarlyRetirementOfDebtFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Prepayment charge on early retirement of debt, financing activities</link:label>
    <link:label id="lab_dec_PrepaymentChargeOnEarlyRetirementOfDebtFinancingActivities_documentation_en" xlink:label="lab_dec_PrepaymentChargeOnEarlyRetirementOfDebtFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Prepayment charge on early retirement of debt, financing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dec_PrepaymentChargeOnEarlyRetirementOfDebtFinancingActivities" xlink:href="213800YR9TFRVHPGOS67-2024-12-31.xsd#dec_PrepaymentChargeOnEarlyRetirementOfDebtFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dec_PrepaymentChargeOnEarlyRetirementOfDebtFinancingActivities" xlink:to="lab_dec_PrepaymentChargeOnEarlyRetirementOfDebtFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_GainsLossesOnDisposalsOfInvestments_fbef9de0-ca04-417f-abdb-b29477ac9b3b_negatedLabel_en" xlink:label="lab_ifrs-full_GainsLossesOnDisposalsOfInvestments" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Gains (losses) on disposals of investments</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GainsLossesOnDisposalsOfInvestments" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_GainsLossesOnDisposalsOfInvestments"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_GainsLossesOnDisposalsOfInvestments" xlink:to="lab_ifrs-full_GainsLossesOnDisposalsOfInvestments" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract_ccab2c66-60f1-4e23-a741-85bc6c0171d8_terseLabel_en" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en">Cash flows from (used in) operating activities [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract" xlink:to="lab_ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_EquityAbstract_41dfc0a8-3157-44a6-b8d2-12539810d6b3_terseLabel_en" xlink:label="lab_ifrs-full_EquityAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en">Equity [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_EquityAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EquityAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_EquityAbstract" xlink:to="lab_ifrs-full_EquityAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInOperations_dc9ae512-677b-450d-988b-232fd8299f6b_totalLabel_en" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperations" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en">Cash flows from (used in) operations</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperations" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInOperations"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperations" xlink:to="lab_ifrs-full_CashFlowsFromUsedInOperations" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForReconcileProfitLossAbstract_5d07e330-187a-4bd7-8a14-476c9754365d_terseLabel_en" xlink:label="lab_ifrs-full_AdjustmentsForReconcileProfitLossAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en">Adjustments to reconcile profit (loss) [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForReconcileProfitLossAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdjustmentsForReconcileProfitLossAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AdjustmentsForReconcileProfitLossAbstract" xlink:to="lab_ifrs-full_AdjustmentsForReconcileProfitLossAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_dec_GainsLossesOnCancellationOfDebt_8c981963-0c0d-43ba-a8a5-92af40ef582e_negatedLabel_en" xlink:label="lab_dec_GainsLossesOnCancellationOfDebt" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Gains (losses) on cancellation of debt</link:label>
    <link:label id="lab_dec_GainsLossesOnCancellationOfDebt_label_en" xlink:label="lab_dec_GainsLossesOnCancellationOfDebt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Gains (losses) on cancellation of debt</link:label>
    <link:label id="lab_dec_GainsLossesOnCancellationOfDebt_documentation_en" xlink:label="lab_dec_GainsLossesOnCancellationOfDebt" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Gains (losses) on cancellation of debt</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dec_GainsLossesOnCancellationOfDebt" xlink:href="213800YR9TFRVHPGOS67-2024-12-31.xsd#dec_GainsLossesOnCancellationOfDebt"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dec_GainsLossesOnCancellationOfDebt" xlink:to="lab_dec_GainsLossesOnCancellationOfDebt" xlink:type="arc" order="1"/>
    <link:label id="lab_dec_AssetAcquisitionDeferredConsiderationPayments_2ff07d29-444b-4c59-8e36-0d0b266d6b32_negatedLabel_en" xlink:label="lab_dec_AssetAcquisitionDeferredConsiderationPayments" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Purchase of intangible assets, classified as investing activities</link:label>
    <link:label id="lab_dec_AssetAcquisitionDeferredConsiderationPayments_label_en" xlink:label="lab_dec_AssetAcquisitionDeferredConsiderationPayments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Asset acquisition, deferred consideration payments</link:label>
    <link:label id="lab_dec_AssetAcquisitionDeferredConsiderationPayments_documentation_en" xlink:label="lab_dec_AssetAcquisitionDeferredConsiderationPayments" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Asset acquisition, deferred consideration payments</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dec_AssetAcquisitionDeferredConsiderationPayments" xlink:href="213800YR9TFRVHPGOS67-2024-12-31.xsd#dec_AssetAcquisitionDeferredConsiderationPayments"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dec_AssetAcquisitionDeferredConsiderationPayments" xlink:to="lab_dec_AssetAcquisitionDeferredConsiderationPayments" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_StatementOfChangesInEquityLineItems_20e978a7-ce84-4948-a30e-ea200f37a094_terseLabel_en" xlink:label="lab_ifrs-full_StatementOfChangesInEquityLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en">Statement of changes in equity [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_StatementOfChangesInEquityLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_StatementOfChangesInEquityLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="lab_ifrs-full_StatementOfChangesInEquityLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AddressOfRegisteredOfficeOfEntity_62cee0fe-50f7-4660-a682-291d7a7ac135_terseLabel_en" xlink:label="lab_ifrs-full_AddressOfRegisteredOfficeOfEntity" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en">Address of entity's registered office</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AddressOfRegisteredOfficeOfEntity" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AddressOfRegisteredOfficeOfEntity"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AddressOfRegisteredOfficeOfEntity" xlink:to="lab_ifrs-full_AddressOfRegisteredOfficeOfEntity" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInFinancingActivitiesAbstract_274f4ae4-a0fe-4be1-ac1d-ae9ae5bdd0e7_terseLabel_en" xlink:label="lab_ifrs-full_CashFlowsFromUsedInFinancingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en">Cash flows from (used in) financing activities [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInFinancingActivitiesAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivitiesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInFinancingActivitiesAbstract" xlink:to="lab_ifrs-full_CashFlowsFromUsedInFinancingActivitiesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_StatementOfChangesInEquityTable_fc1f8725-2959-436c-b567-368e13e96aaa_terseLabel_en" xlink:label="lab_ifrs-full_StatementOfChangesInEquityTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en">Statement of changes in equity [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_StatementOfChangesInEquityTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_StatementOfChangesInEquityTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_StatementOfChangesInEquityTable" xlink:to="lab_ifrs-full_StatementOfChangesInEquityTable" xlink:type="arc" order="1"/>
  </link:labelLink>
</link:linkbase>
