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