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