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