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