[1,3,2,6,5,4,10,9,8,7,15,14,13,12,11,21,20,19,18, 17,16,28,27,26,25,24,23,22,35,34,33,32,31,30,29, 36,44,42,41,40,39,38,37,45,43,54,52,50,49,48,47, 46,55,53,51,65,63,61,59,58,57,56,66,64,62,60,77, 75,73]