3 + 1 = - 4, 2 + 8 = - 10, 8 + 1 = - 9, 6 + 2 = - 8, 1 + 4 = - 5, 5 + 2 = - 7, 2 + 0 = - 2, 4 + 2 = - 6, 2 + 1 = - 3, 1 + 0 = - 1,

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