[4,5,3,2,7,6,9,0,1,8,13,12,11,16,15,10,19,18,17, 14,21,20,25,24,23,28,27,22,31,30,29,26,33,32,37, 36,35,40,39,34,43,42,41,38,45,44,49,48,47,52,51, 46,55,54,53,50,57,56,61,60,59,64]