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