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COMMITMENTS AND CONTINGENCIES (Details) - Future minimum lease payments under operating leases
May 31, 2022
USD ($)
Future Minimum Lease Payments Under Operating Leases Abstract  
Less than 1 year $ 351,000
1 to 2 years 362,000
2 to 3 years 373,000
3 to 4 years 384,000
4 to 5 years 104,000
Total undiscounted lease payments 1,574,000
Less imputed interest 194,000
Total operating lease liabilities $ 1,380,000