eeee eefe eerg eero ef-g efeo efgp efor egee eger egfp egfr egge eggo eggp ego- egor egpe egpo egre eore epee eper epor eppo eppp epro eprp erer erg- ergg ergo eroe eroo erpe erre erro feer fefe feff fefo fege fegg feof fere fero ferr ffee ffff ffrr foer fofo foge fogg fogo foof fopp for- fore forg foro forr fprf free freo frep froe frog frop geep geer gefe gege gegg gego geo- geof geog gepe gere gero gfer gfor ggfg gggg ggpo goef goer gofe goff gofr gogo goof goog goop goor gope gopo gore gorf gorg goro gorp gorr gper gpgp gprp gree gref greg grep grof grog groo grop gror grrr o-eo oere ofer off- offe offo offr ofgo ofor ofre ogee oger ogfr ogge ogog ogre ogro ooer ooff oooo oore opep oper opo- opor oppo ore- oreg oreo orer orfe orff orge orgo oro- oroe orof oror orpe orro peep peer peff pegg pego peor pepe pepo per- pere perf perg pero perp perr pfff pffr pger poer poff poge pogg pogo poof poop poor pop- pope popo popp pore porg poro porr pper pppo pppp pprf pre- pree pref preg prep pro- proe prof prog proo prop reef reep refe reff refg refr rege rego regr reof reog reop repe repo repp repr rere rerg rero rfef roeg roer rofe roff rofo roge rogg rogo roof roog roop roor rope ropo rore roro rpoe rpof rrrr