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