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

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