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

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