[1,3,2,4,7,6,8,5,9,13,12,14,11,15,10,16,21,20,22, 19,23,18,24,17,25,31,30,32,29,33,28,34,27,35,26, 36,43,42,44,41,45,40,46,39,47,38,48,37,49,57,56, 58,55,59,54,60,53,61,52,62,51,63,50,64,73,72,74, 71,75,70,76,69,77,68,78]