[2,1,4,3,6,5,10,9,8,7,12,11,16,15,14,13,20,19,18, 17,22,21,24,23,28,27,26,25,30,29,36,35,34,33,32, 31,42,41,40,39,38,37,46,45,44,43,50,49,48,47,52, 51,54,53,58,57,56,55,68,67,66,65,64,63,62,61,60, 59,70,69,78,77]