[0,1,4,2,3,7,8,9,5,6,12,13,14,15,16,10,11,19,20, 21,22,23,24,25,17,18,28,29,30,31,32,33,34,35,36, 26,27,39,40,41,42,43,44,45,46,47,48,49,37,38,52, 53,54,55,56,57,58,59,60,61,62,63,64,50,51,67,68, 69,70,71,72,73,74]