fixed playstore link
Try to color them all to be the same shape.
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Just remember two rules.
1. Use all colors.
2. Colorize to the same shape.
2-1. The rotation is recognized as the same shape.
□■＝■■
□■＝■□
■■＝■□
2-2. reversal shape do not have the same shape.
□■≠■□
□■≠■□
■■≠■■
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