(c4) (f_g~) (g') (g) (g') (h) (gf) (g) (g_h) (;) (f') (h) (j') (i) (jk) (i') (j) (h') (g) (h') (h) (i') (h) (g.) (::) (j) (j) (i) (j) (h) (g.) (::)