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Depreciation and amortization (Tables)
12 Months Ended
Mar. 31, 2023
Schedule of depreciation and amortization

   2021   2022   2023 
   March 31, 
   2021   2022   2023 
Depreciation   33,893    14,752    14,307 
Amortization   627,651    230,758    119,196 
Depreciation on right of use assets   87,936    62,643    56,649 
Total   749,480    308,153    190,152