[1,2,3,5,4,7,6,8,9,11,10,12,13,17,14,15,16,19,18, 20,21,23,22,25,24,27,26,28,29,31,30,32,33,35,34, 36,37,41,38,39,40,43,42,44,45,47,46,48,49,53,50, 52,51,55,54,57,56,59,58,60,61,67,62,63,64,65,66, 68,69,71,70,73]