[0,3,10,13,17,6,7,16,14,9,4,19,11,2,1,12,18,5,8,
15,20,23,30,33,40,43,50,53,60,63,67,26,27,36,37,
46,47,56,57,66,64,29,24,39,34,49,44,59,54,69,61,
22,21,32,31,42,41,52,51,62,68,25,28,35,38,45,48,
55,58,65,70,73,80,83,90,93,100,103,110,113,117,76,
77,86,87,96,97,106,107]
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