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