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