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

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