True: 0 + 18 = 18, 0 + 7 = 7, 15 + 4 = 19, 7 + 4 = 11, 8 + 1 = 9, 16 + 4 = 20, False: 9 + 4 = 4, 15 + 1 = 1, 2 + 11 = 12, 1 + 9 = 18, 10 + 4 = 7, 17 + 12 = 19,

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