oger ogge ogog ogou ogre ogro oobe oocr ooer oooo oore oort ootb orbb orbe orbo orbu orce orco ore- oreb orec oreg oreo orer orge orgo oro- oroe oror orot orro ortc orte orto orub otee oter oto- otoe otog otoo otor otre otro otte otto ottu otur oucc ouer ouge our- oure ouro ourt out- outb oute outo ouu- rbbb rbbr rcbc rcbo rccb rccc rcet rcgc rcrg rctc rctg rebb rebe rebo rebu recc rece recr rect recu reeb reet rege rego regr regt regu reog reot reou rere rerg rero rert reru rete reto retr rett reue reut reuu rgbe rgtr rob- robb robe robo robt robu rocc roce roco roeg roer roet roge rogg rogo roob roog roor root rorc rore roro rort roru rotc rote rotg roto rotr rott roub roue rout rrrr rtcc rtce rtcg rtee rubb rube rubu ruce ruct ruer ruet ruge rugg rurc rure ruro ruru rute ruto rutt rutu tbcb tbcc tbce tbrb tccc tccu tctc tebo tebu teco tecr tect teec teer teet tegg tego tegt tegu teor ter- terc tere tero terr teru tete teto tetr tett tetu teut tgcc tgtc tobe tobo tobt tobu toce toco toee toer toet toge togo togr togt toor toot torc tore torg toro torr tort toru totc tote toto totr tott toug tour tout trcc tre- trec tree treg treo tret treu trge troc troe trog troo trot trou trtc trte trtr trub truc true trug trut truu ttbb tteo tter ttoe tttt tubb tube tubo tubr tubu tucc tuco tuer tuet tugg tugu tuor turb turc ture turg turo turr turt turu tute tuto tutt tutu tuuo ubbe ubbo uber ubet uboc ucbc ucrc ucut ugcc ugcg ugeo uggo uggt ugro ugur uguu uocc uor- uore urbe ure- uret urge urgu uro- uroo urre urte urur urut utec uter utor utto uttu utug uuoc uuuu

-tree bbbee be-er be-ro beber bebog bebot becco becue becut beebe beete beeut begee beget begge begob begor begot begto begue begur begut beote beour berbe bercu berec bereg beret berge berob beroe beror berre berru berte berto betee beter betoo betor betou betre bett- bette betto beuer beure beute bo-bo bobet boboc bobr bobre bocce bocet bocor boece boege boero boeur boger boget bogge bogoe bogor bogot bogu bogue bogur bogut booce booco booer boore boort booru borbo borce borec boree borer boret borge borgo borgu boro- boroo borot borou borre borro borut botet botou botro botte bottu bouce bouee bouer bouet bouge boure bourg boute bouto brebu brece breer breet breg- brege bregg breo- breoc brere breto brett breu- brobo broce broer broto broue brout brrrr bruce bruer bruet bruge brugg brute btc-e btr-t bubbe buber bucco buceo bucet bucur buger bugge bugoo bugre burcu buret burge burgo burgu buroo burro burru burte burtt buruc burut butec buteo buter buto- butor butot butou butte butuo butut c-cor c-tec ccccc ccett cebec ceber cebgo ceco- ceere cegge ceoce ceoor cerbu cerc- cerce cerco cerec cerer ceret cerge cero- ceroc cerou cerre cerro certe ceto- cette co-bo co-co cobbe cobot cobre cobue cocc- cocce cocco coceo cocto cocur coete coeur cogue cooee cooer coore coorg coote corbe corbo corbu corce core- coree corer coreu corge coro- corot corre corte corto coter cott- cotte cotto cottu couco couer courb coure court couru couto coutu crebe crece creer cregg creo- creot crete cretu creu- creue croce croco crooe croot crore crote crott crout cruce cruet cruor crure ctree cttee cubbe cubeb cuber cubo- cubot cubub cuero cueto cuoco cuore curce curer curet curre curro curto curug cutco cutcu cutee cuter cutro cutto ebber ebbet eberg ebert eboue ebure ecto- ector ectot eeeee egger egret eorre erbbe erber erceg erect erege erere ergo- ergot eroge eroor erore eroto error errtu erte erter ertug eruct erugo etete etoro etour etree etrog etter eturu eubro eucre euro- eurre gberg gberu geber gebet gebre gebur gecco geebo geere geert geete gegge georg gerbe gerbo gerce gerre gertt getco getee geter getgo gette getto go-go go-oo go-to gobbe gobbo gobeo gobet gobot gocco gocoo goget gogro gogue goobo googe goore goote goout gorbe gorce goree gorer gorge gorgo gorre goter gotoo gotor gotto gotur gouet gouge goure grebe grebo grece greco grecu greer greet grege gregg grego greot grete grett greut grgur groce groet groge grogg groot grote grott groue grout grrrr grubb grube grure gruut gtrot gtube gubbe gubbo guber gubru guce gucer guere guero guoge gurge guroo gurre gurro gurur gutte o-r-b obbet obegu oberg obert obete oboro obote oboue obout obreb occur ocoee ocote ocr-b ocree octet octo- octor oeco- ogogo ogugu oo-er oocre ooooo orbec orbot orcet oreco oreo- orere orero orgue orobe orobo oroco oroer orout orret orrgo orter ortet ortoo orube oruce oruro orutu otcbb otego otere otero otoce ototo otour otter ottur oture oubut ouert ouoro ource oure- outer outgo outre outro outto r-co- rebbe rebec rebeg reber rebet rebut recce recco recet recog rect- recte recto recue recur recut reece reege reere regec reger reget regge reggo regtt regur regut reorg rere- reree reret rerob retee reter retgo retrg retro rette retto reuer reuet reute ro-ro robbe robbo robec rober robo- robor robot robrt robte robur rocco rocor rocou roero roger roget rogge rogue rooer rooge roore roote rooue rorbu rorer roteb roter rotge roto- rotor rotot rotte rotto roubt rouer rouet rouge roure route routt rubee ruber rubor rucer ruegg ruere ruete ruger ruget rugge rurec ruter rutog rutte ruutu tbtbt tbutt tcobb teber tebet tecou tectb teege tegre teguc tegur teoco terce terco teret tereu terge tergo tergu teror terre terro tert- teruo teter tetr- tetro tette teuge teuto to-be to-go tobbe tobeg tober tobet tobog tobor tobot tobou tobre tocco toco- tocut toece toego toerr toeto toget togge togou togue toobe toore torbe torce toreo toret torgo torob torog torre torro torte torto tortu torue toter toto- totoe totoo totte tougu toure touro toute trboc treco treer treet treg- trego