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