2, 2 - 0 =, 15, 16 - 1 =, 16, 19 - 3 =, 6, 10 - 4 =, 12, 12 - 0 =, 3, 20 - 17 =, 8, 15 - 7 =, 11, 17 - 6 =, 5, 17 - 12 =, 1, 1 - 0 =

subtraction match up

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