a b c d e f g h i j  
j i h g f e d c b a  
c j c i f  d a g e c  g i i f e  c i d c a  i b a j a 
c j d g a  a a d g j  b a h e h  d i a j e  d h j c g 
c a a b d  e f a d g  f b b a b  h i e d c  j c i f d 
a g e c g  i i f e c  i d c a i  b a j a c  j d g a a 
iceib hfjcd ejjjd dcifi djfab hjhaa abfjd jjcec iejcf hejab 
hggid jjeai aaidf agjge gdfei gihgh jhajh ijdfa begad jdgcd 
jidgg bfhig ibiaj ibdid dibdc gfabi hjcgh begcg dhdia fgjef
jfhgc iifjb jijid fdgig gbhac ecgdj bjjcd cbhfg cchgc bebff
iacdh fdbha gbeac bcjcj hihca debcb ieaah cecjc gbgca cibcd