b NCTF
e e c a h f d b a g e c a g e c h
f d b
h b g e b g d a f d h e b g d a b
h e b
g c h c h f c b a h g f e d
c b a
h g f d c b h g e c b h g e c
a h f
d b h f d b h f c a g e b h f
c a f
d a g d a f b f h c f a c f h
c f h
c f h c b e g a d f h b d f a
c e g
a c e f h b d e g a b d f g a
b d e
