[0,1,2,3,4,5,7,8,6,9,10,12,13,11,17,18,20,21,22,
 16,19,14,15,23,24,26,27,25,31,32,34,35,36,30,33,
 28,29,45,46,48,49,50,54,55,57,58,59,61,62,63,64,
 44,47,53,56,60,42,51,37,38,43,52,40,41,39,65,66,
 68,69,67,73,74]