oreo orer orfe orff orfi orge orgo ori- orid orie orif orig oril orio orit orle orlo oro- oroe orof oror orot orri orro orte orto oted otee oter otif otit oto- otoe otof otog otoo otor otre otro otte otti otto rder rdio redd rede redi redl redo redr reed reef reel reet refd refe reff refg refi refl refr reft regd rege regi regl rego regr regt reid reif reii reil reir reit reld rele rell relo relt reod reof reog reol reot rerd rere rerg reri rero rert retd rete reti reto retr rett rfdi rfef rffl rfid rgit rgtr ridd ride ridi rido ried rief riel rier riet rife riff rift rige rigg rigi rigo riif rile rill rilo riol riot rire riri rite riti ritl rito ritt rldt rlee rlef rlif rodd rode rodi rodo roed roeg roel roer roet rofe roff rofl rofo roge rogg rogi rogo roid roif roig roil roio roir roit rold role rolf roll rolo rolt rood roof roog rooi rool roor root rore rori roro rort rote rotg roti rotl roto rotr rott rred rrif rrle rrrr rtdt rtee rtei rtle rtlt tdff tdil tdor tdri tedd tede tedi teed teef teel teer teet teff tefi tefl teft tegg tegi tego tegt teie teil teir tel- teld tele telg teli tell telo telt teor ter- tere terf teri tero terr tete teti teto tetr tett tfot tgel tgif tgle tidd tide tie- tied tiee tief tiei tiel tieo tier tiet tiff tifo tift tige tigi tigr tiit tild tile till tilo tilr tilt tird tire tiri tirl tiro tirr tite titi tito titt tldr tlli todd tode todi todo todt toed toee toei toer toet toff tofi tofo toft toge togo togr togt toid toie toil toit tol- told tole toli toll tolo tolt tood toof tool toor toot tord tore torf torg tori toro torr tort totd tote toti toto totr tott tre- tred tree tref treg trei treo tret trfd trfr trge tri- trie trif trig tril trio trit trod troe trog troi troo trot trte trtr tteo tter ttff ttoe tttt