(c3) (e_i) (i) (i) (i') (i) (i) (k') (i) (hi) (i.) (;) (gxg) (i) (h') (gxi) (hg) (f') (gxg) (h) (gxgf) (e.) (e.) (;) (iji___) (ih~) (i) (il) (lli) (i.) (:) (i) (i') (j) (ih) (i>) (g.f!gwh.) (;) (h) (hhg) (f) (g_h) (f) (fe) (d) (ef) (f) (e.) (e.) (::) (i) (i) (j) (i) (h) (gi..) (::)