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Warrant liabilities (Tables)
3 Months Ended
Sep. 30, 2022
Warrant Liabilities  
Schedule of assumptions for warrant liabilities
   
  As of May 14, 2021
Expected term 1 day to 3 years
Expected volatility 3.3% to 58%
Risk-free interest rate 0.35% to 0.92%
Expected dividend rate 0%
Probability 100%