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

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