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