[0,1,2,3,6,5,4,7,8,11,10,9,17,18,19,21,20,12,13, 14,16,15,22,23,26,25,24,27,28,35,44,43,36,33,40, 29,32,37,42,39,34,41,38,31,30,45,46,49,48,47,50, 51,58,67,66,59,56,63,52,55,60,65,62,57,64,61,54, 53,68,69,72,71]