ocef ocet ocre ocro ocrr oct- octe octo ocur oec- oecc oeec oere oeuf ofcr ofer off- offc offe offo offr offu ofor ofre oobe oocr ooer ooff oooo oore oort ootb orbb orbe orbo orbu orce orco ore- oreb orec oreo orer orfe orff orfu oro- oroe orof oror orot orro ortc orte orto orub otee oter otfc oto- otoe otof otoo otor otre otro otte otto ottu otur oucc ouer oufc oufe ouff our- oure ouro ourt out- outb oute outo ouu- rbbb rbbr rcbc rcbo rccb rccc rcet rcfc rctc rebb rebe rebo rebu recc rece recr rect recu reeb reef reet refe reff refr reft refu reof reot reou rere rero rert reru rete reto retr rett reue reuf reut reuu rfef rffc rftc rob- robb robe robo robt robu rocc roce roco roer roet rofc rofe roff rofo roob roof roor root rorc rore roro rort roru rotc rote roto rotr rott roub roue rouf rout rrfc rrrr rtbf rtcc rtce rtee rtfb rtfc rubb rube rubu ruce ruct ruer ruet rufc rufe ruff rufo ruft rurc rure ruro ruru rute ruto rutt rutu tbcb tbcc tbce tbrb tccc tccu tcfc tctc tebo tebu teco tecr tect teec teef teer teet tefc teff teft teor ter- terc tere terf tero terr teru tete teto tetr tett tetu teut tfcu tfeb tfec tfot tftc tobe tobo tobt tobu toce toco toee toer toet toff tofo toft tofu toof toor toot torc tore torf toro torr tort toru totc tote toto totr tott tour tout trcc tre- trec tree tref treo tret treu trfc trfr troc troe troo trot trou trtc trte trtr trub truc true trut truu ttbb tteo tter ttfc ttff ttoe tttt tubb tube tubo tubr tubu tucc tuco tuer tuet tufc tufe tuff tufo tuft tufu tuor turb turc ture turf turo turr turt turu tute tuto tutt tutu tuuo ubbe ubbo uber ubet uboc ubtf ucbc ucfb ucrc ucut ufcu ufer uffe uocc uofo uor- uore urbe ure- uret urfe urff urft uro- uroo urre urte urur urut utec uter utfo utor utto uttu uuoc uutf uuuu

-tree bbbee be-er be-ro beber bebot becco becue becut beebe beeft beete beeut beffe befoe befor befur beofe beoff beote beour berbe bercu berec beret 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 boero boeuf boeur bofet boffo booce booco booer boore boort booru borbo borce borec boree borer boret boro- boroo borot borou borre borro borut botet botou botro botte bottu bouce bouee bouer bouet boure boute bouto brebu brece breef breer breet breo- breoc brere breto brett breu- brobo broce broer broft broto broue brout brrrr bruce bruer bruet bruff brute btc-e btr-t bubbe buber bucco buceo bucet bucur bufet buffe buffo burcu buret buroo burro burru burte burtt buruc burut butec buteo buter buto- butor butot butou butte butuo butut c-cor c-tec cbeff cbeft ccccc ccett cebec ceber ceco- ceere cefcu cefor ceoce ceoor cerbu cerc- cerce cerco cerec cerer ceret cero- ceroc cerou cerre cerro certe ceto- cette cfour cfu-e co-bo co-co cobbe cobot cobre cobue cocc- cocce cocco coceo cocto cocur coete coeur cofer coffe cofre cofur cooee cooer coore coote corbe corbo corbu corce core- coree corer coreu corfe corfo corfu coro- corot corre corte corto coter cott- cotte cotto cottu couco couer courb coure court couru couto coutu crebe crece creer creft creo- creot crete cretu creu- creue croce croco croft crooe croot crore crote crott crout cruce cruet crufe cruft cruor crure ctree cttee cubbe cubeb cuber cubo- cubot cubub cuero cueto cufeu cuffe cufre cuoco cuore curce curer curet curre curro curto cutco cutcu cutee cuter cutro cutto ebber ebbet ebert eboue ebure ecoff ectfe ecto- ector ectot eeeee ef-tu efere efetf effer effet efore efter efuru efutu eofor eorre erbbe erber erect erere eroor erore eroto error errtu erte erter eruct etete etoro etour etree etter eturu eubro eucre euro- eurre febre feeor feere fefor feoff ferce feret ferr- ferre ferro ferte feter feto- fetor fette feuer feute focer foore foote force fore- foreo foret forro forte forto forur fotte fotur fouee fouet fourb foure fouro freer freet frere frett freur frobe froot frore frote fruct frute fruto ftrtt fu-fu fuco- fuero fuoco furbo furo- furor futur o-fer o-r-b obbet obert obete oboro obote oboue obout obreb occur ocftc ocoee ocote ocr-b ocree octet octo- octor oeco- offer offof offre offto ofoto ofour ofter oo-er oocre ooooo orbec orbot orcet oreco oreo- orere orero orfeo orfeu orfoe orfor orobe orobo oroco oroer orout orret orter ortet ortoo orube oruce oruro orutu otcbb otere otero otoce ototo otour otter ottur oture oubut ouert ouoro ource oure- outer outof outre outro outto r-co- rebbe rebec reber rebet rebut recce recco recet rect- recte recto recue recur recut reece reefe reeft reere refco refer refet reffe reffo refut rere- reree reret rerob retee reter retro rette retto reuer reuet reute ro-ro robbe robbo robec rober robo- robor robot robrt robte robur rocco rocor rocou roero roffe rofor rooer roofe rooft roore roote rooue rorbu rorer roteb roter roto- rotor rotot rotte rotto roubt rouer rouet roufe roure route routt rubee ruber rubof rubor rucer ruere ruete ruffe ruffo rufo- rurec ruter rutte ruutu tbtbt tbutt tcobb teber tebet tecou tectb tefe teoco terce terco teret tereu teror terre terro tert- teruo teter tetr- tetro tette teuto to-be tobbe tober tobet tobor tobot tobou tobre tocco toco- tocut toece toeof toerr toeto tofet toffo tofor tofte toobe toore torbe torce toreo toret torob torre torro torte torto tortu torue toter toto- totoe totoo totte toure touro toute trboc treco treer treet trefe treff trere trete trett treut troco troee trofe troff troft trott troue trout trubu truce truco truer truff truro trute ttttt tuber tubo- tubof tubou tucet tuctu tuero tuffe tufte tuotu turbe turbo turbt turco turet turoc