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