[0,1,4,3,2,5,6,7,8,9,10,11,14,13,12,15,16,17,18, 19,40,41,44,43,42,45,46,47,48,49,30,31,34,33,32, 35,36,37,38,39,20,21,24,23,22,25,26,27,28,29,50, 51,54,53,52,55,56,57,58,59,60,61,64,63,62,65,66]