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