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