{2, 1, 4, 3, 8, 9, 5, 8, 6, 7}
{1, 2, 5, 4, 3, 9, 8, 6, 7}
{2, 3, 1, 4, 7, 9, 5, 8, 6}
{1, 2, 5, 4, 3, 9, 7, 8, 6}
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