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