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