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