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