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