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