[0,1,2,1,3,2,4,3,4,5,5,6,6,7,8,9,7,10,8,11,12,13,
9,14,10,15,16,17,11,18,12,19,20,21,22,23,13,24,25,
26,14,27,15,28,29,30,16,31,32,33,34,35,17,36,18,
37,38,39,19,40,20,41,42,43,21,44,22,45,46,47,23,
48,24,49,50,51,25,52,26,53,54,55,27,56,57,58,59,
60,28,61,29,62,63,64,30]
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