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