3 + 2 = 2 - 1 = 2 + 2 =
3 + 1 = 3 - 1 = 2 + 1 =
2 + 1 = 4 - 1 = 2 + 1 =
4 + 1 = 3 + 1 = 1 + 1 =
3 - 3 = 1 - 1 = 2 - 1 =
4 + 1 = 4 + 1 = 1 - 1 =
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