b b b b b b g gy nnnnnn n n n n n n n n nnnn n n n n n n
nsdndf f f rg gt gh h h h h h h h j
x c c c c c c c c
c bc cbbc b cb cb b b b b b b b b b b b
b b b b b n b h h hg h hh h h h hh h g gh b
rgfv rrr e rt gg g h h h h h h j j j
s dd d d ed d df d dd d d d d ed d d d
gdgddggxggxgxvvxcvcvc ch h h h hh ch h
