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

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