[1,2,4,3,6,5,8,7,9,10,12,11,14,13,15,16,18,17,20, 19,21,22,24,23,25,26,27,28,30,29,32,31,33,34,35, 36,38,37,39,40,42,41,44,43,45,46,48,47,49,50,51, 52,54,53,55,56,57,58,60,59,62,61,63,64,65,66,68, 67,69,70,72,71]