1 + 0 =, 1, 4, 5, 7, 2 + 0 =, 2, 4, 7, 9, 1 + 14 =, 15, 17, 18, 20, 3 + 2 =, 4, 5, 6, 10, 7 + 2 =, 3, 9, 10, 14, 8 + 3 =, 11, 12, 13, 16, 9 + 0 =, 4, 6, 9, 15, 14 + 4 =, 11, 15, 18, 19, 4 + 12 =, 5, 13, 14, 16, 5 + 6 =, 6, 9, 10, 11

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