eeee eefe eefl eele elee elef elem eler elfe elle elme elml emel emer emle emlm emme emml emre erel erem erer erle erll erme erre feel feem feer fefe feff fele felf fell felm feme femm fere ferm ferr ffee ffff ffrr flee flem fler free frem leef leel leem leer lefe leff lele lell leme lemm lere lerm lfmr llef llll lmfm lmmr lrrr meef meel meem meer mefe meff mel- mele melf mell meme meml memr mer- mere merf merl merm mlle mmff mmmm mmrf mree mrml reef reel reem refe reff refl refr rele rell relm reme rere rfef rfem rffl rlee rlef rlml rmll rrle rrrr