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Suppliers and contractors (Tables)
12 Months Ended
Dec. 31, 2022
Suppliers And Contractors  
Summary of amount due to suppliers and contractors
           
    Notes   December 31, 2022   December 31, 2021
Third parties – Brazil       2,691   1,766
Third parties – Abroad       1,599   1,618
Related parties   31   171   91
Total       4,461   3,475