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Consolidated Balance Sheets (Parenthetical) - $ / shares
Jan. 31, 2022
Oct. 31, 2021
Jul. 31, 2021
Consolidated Balance Sheets      
Common stock, shares authorized 300,000,000   300,000,000
Common stock, par value (in dollars per share) $ 0.001 $ 0.001 $ 0.001
Common stock, shares issued 74,498,053   56,808,953
Common stock, shares outstanding 56,808,953   56,808,953