10 + 2 = - 12, 2 + 1 = - 3, 10 + 3 = - 13, 4 + 10 = - 14, 4 + 2 = - 6, 6 + 10 = - 16, 3 + 3 = - 6, 10 + 6 = - 16, 12 + 1 = - 13, 2 + 2 = - 4, 12 + 2 = - 14, 4 + 4 = - 8, 13 + 3 = - 16, 12 + 3 = - 15, 14 + 3 = - 17, 13 + 5 = - 18, 15 + 5 = - 20, 5 + 4 = - 9, 2 + 8 = - 10, 4 + 14 = - 18, 4 + 15 = - 19,

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