(c4) (i') (j) (i) (h!iwj_i) (g.) (;) (i_) (j) (i') (h>) (hgh) (e.) (,) (e_f) (g) (gf) (e_f) (g) (gf) (e.) (e.) (::) (i) (i) (j) (h) (j) (i.) (::)