[1,3,2,5,6,4,8,9,10,7,15,12,13,14,11,20,21,17,18, 19,16,26,27,28,23,24,25,22,33,34,35,36,30,31,32, 29,45,41,42,43,44,38,39,40,37,54,55,50,51,52,53, 47,48,49,46,64,65,66,60,61,62,63,57,58,59,56,75, 76,77]