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{ }
{ 1, 2, 3, 16, 17, 18, 26, 27, 28 }
{ 9, 10, 14, 15, 24, 25, 35 }
{ 4, 5, 6, 7, 8, 11, 12, 13, 19, 20, 21, 22, 23, 29, 30, 31, 32, 33, 34 }
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