eeee eefe eero eete eetu efeo efet efor eft- eftu eore eoto erer eret erft eroe eroo erre erro ertu erur etee eter etfe etoe etre etro ette etto ettu euer eur- eure euro eurt feer feet fefe feff fefo feof fere fero ferr fert feru fete fetr fett fetu ffee ffff ffrr fftf foer fofo foof foot for- fore foro forr fort fote foto fott four fout free freo fret froe frot frou frue fter fuet fuff fufu fuor fur- fure furo furr furt fute futo futu o-eo oere oeuf ofer off- offe offo offr offu ofor ofre ooer ooff oooo oore oort ore- oreo orer orfe orff orfu oro- oroe orof oror orot orro orte orto otee oter oto- otoe otof otoo otor otre otro otte otto ottu otur ouer oufe ouff our- oure ouro ourt out- oute outo ouu- reef reet refe reff refr reft refu reof reot reou rere rero rert reru rete reto retr rett reue reuf reut reuu rfef roer roet rofe roff rofo roof roor root rore roro rort roru rote roto rotr rott roue rouf rout rrrr rtee ruer ruet rufe ruff rufo ruft rure ruro ruru rute ruto rutt rutu teef teer teet teff teft teor ter- tere terf tero terr teru tete teto tetr tett tetu teut tfot toee toer toet toff tofo toft tofu toof toor toot tore torf toro torr tort toru tote toto totr tott tour tout tre- tree tref treo tret treu trfr troe troo trot trou trte trtr true trut truu tteo tter ttff ttoe tttt tuer tuet tufe tuff tufo tuft tufu tuor ture turf turo turr turt turu tute tuto tutt tutu tuuo ufer uffe uofo uor- uore ure- uret urfe urff urft uro- uroo urre urte urur urut uter utfo utor utto uttu uutf uuuu