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9. Cancellation of Capital Stock (Details) - USD ($)
3 Months Ended
Feb. 28, 2019
Nov. 30, 2018
Details    
Shares repurchased and cancelled 8,450 95,671
Payments for Repurchase of Common Stock $ 63,929 $ 893,376
Average price per share repurchased and cancelled $ 7.57 $ 9.34
Decrease to retained earnings $ 61,936 $ 870,805
Shares repurchased and cancelled 8,450 95,671