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

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