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LEASES (Details Narrative) - USD ($) | 12 Months Ended
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May 31, 2022 | May 31, 2021
Operating lease, weighted-average remaining lease term | 1 year 4 months 24 days |
Operating lease, weighted-average discount rate | 5.40% |
Operating lease, cost | $ 766,000 | $ 761,000
Minimum |  |
Operating lease term | 1 year |
Maximum |  |
Operating lease term | 4 years |

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