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{ 17, 18, 19, 22, 23, 24 }
{ 1, 2, 3, 6, 7, 8, 11, 12, 13, 14, 27, 28, 29, 30 }
{ }
{ 20, 21, 25, 26, 31, 32 }
{ 4, 5, 9, 10, 15, 16 }
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