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

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