[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18, 19,28,27,26,25,24,23,22,21,20,30,31,32,33,34,35, 36,37,38,29,39,48,47,46,45,44,43,42,41,40,50,51, 52,53,54,55,56,57,58,49,59,68,67,66,65,64,63,62, 61,60,70,71,72,73]