37,36,38,3,2,4,1,0,39,40,31,34,33,32,35,48,49,46,47,17,12,10,11,13,14,30,26,27,29,28,20,18,19,15,16,23,25,24,22,21,7,8,6,5,9,41,42,45,44,43