7 + 8 = 15 - 10 + 5 = 15, 9 + 7 = 16 - 10 + 6 = 16, 8 + 4 = 12 - 10 + 2 =12, 5 + 9 = 14 - 10 + 4 = 14, 6 + 7 = 13 - 10 + 3 = 13, 5 + 6 = 11 - 10 + 1 = 11, 8 + 9 = 17 - 10 + 7 = 17, 9 + 9 = 18 - 10 + 8 = 18,

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