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