tote toto totr tott tour tout tox- toxo toxt trcc tre- trec tree treo tret treu trex troc troe troo trot trou trox trtc trte trtr trub truc true trut truu trux ttbb tteo tter ttoe tttt tubb tube tubo tubr tubu tucc tuco tuer tuet tuor turb turc ture turo turr turt turu tute tuto tutt tutu tuuo txtr ubbe ubbo uber ubet uboc ucbc ucrc ucut uext uocc uor- uore urbe ure- uret urex uro- uroo urox urre urte urur urut utec uter utor utto uttu uuoc uuuu uxor uxue xbee xbox xeer xer- xero xert xexe xobc xoco xoro xote xout xoxo xtro xuxu xxxo xxxx

-tree bbbee be-er be-ro beber bebot bebox becco becue becut beebe beete beeut 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 boeur booce booco booer boore boort booru bootx borbo borce borec boree borer boret borex boro- boroo borot borou borox borre borro borut botet botou botox botro botte bottu bouce bouee bouer bouet bouex boure boute bouto boutx boxbe boxee boxer bre-x brebu brece breer breet breo- breoc brere breto brett bretx breu- breux brobo broce broer broto broue brout brrrr bruce bruer bruet brute btc-e btr-t bubbe buber bucco buceo bucet bucur buoux burcu buret 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 ceco- ceere ceoce ceoor cerbu cerc- cerce cerco cerec cerer ceret cero- ceroc cerou cerre cerro certe ceto- cette co-bo co-co cobbe cobot cobre cobue cocc- cocce cocco coceo cocto cocur coete coeur cooee cooer coore coote corbe corbo corbu corce core- coree corer coreu corex coro- corot corre corte corto coter cott- cotte cotto cottu couco couer courb coure court couru couto coutu crebe crece creer creo- creot crete cretu creu- creue creux croce croco crooe croot crore crote crott crout cruce cruet cruex cruor crure ctree cttee cubbe cubeb cuber cubo- cubot cubox cubub cuero cueto cuoco cuore curce curer curet curre curro curto cutco cutcu cutee cuter cutex cutro cutto e-box ebber ebbet ebert eboue ebure ecto- ector ectot eeeee eorre erbbe erber erect erere eroor erore eroto error errtu erte erter eruct etete etext etoro etour etree etter eturu eubro eucre eurex euro- eurre excub excur exect execx exert exorb exore exort exout exter extre extro extue exurb exute o-r-b obbet obert obete oboro obote oboue obout obreb occur ocoee ocote ocr-b ocree octet octo- octor oeco- oo-er oocre ooooo orbec orbot orcet oreco oreo- orere orero orexo orobe orobo oroco oroer orout oroux orret orter ortet ortoo orube oruce oruro orutu otcbb otere otero otoce ototo otour otter ottur oture oubut ouert ouoro ource oure- outer outre outro outto oxter r-co- rebbe rebec reber rebet rebox rebut recce recco recet rect- recte recto recue recur recut reece reere reorx rere- reree reret rerob retee reter retex retox retro rette retto reuer reuet reute rexer ro-ro robbe robbo robec rober robo- robor robot robrt robte robur rocco rocor rocou roero roeux rooer roore roote rooue rorbu rorer roteb roter roto- rotor rotot rotox rotte rotto roubt rouer rouet roure route routt rtext rubee ruber rubor rucer ruere ruete rurec ruter rutte ruutu t-box t-rex tbtbt tbutt tcobb teber tebet tecou tectb teoco terce terco teret tereu terex teror terre terro tert- teruo teter tetex tetr- tetro tette teuto texor texte to-be tobbe tober tobet tobor tobot tobou tobre tocco toco- tocut toece toerr toeto toobe toore torbe torce toreo toret torob torre torro torte torto tortu torue torxe toter totex toto- totoe totoo totte toure touro toute toxo- trboc treco treer treet trere trete trett treut treux troco troee trott troue trout trubu truce truco truer truex truro trute truxe ttttt tuber tubex tubo- tubou tucet tuctu tuero tuotu turbe turbo turbt turco turet turoc turot turre turro turtu turut tutee tuteo tutor tutte tutto tuuru u-cee uber- uberx ubobo ucero uouee urbex ureo- uroob urour urter urubu uruce urucu urutu utebo uter- utero utro- utror utter uttur utube uturu ututo uuuuu x-box x-out xbxrx xebec xerbo xero- xerox xerte xetec xetex xexeu xexex xootr xorro xotox xoxox xtext xtort xtree xtube

b-tree bbbbbb bebeto bebout becure beebee beeter berbee berbeo berber berceo bereet berere berour berrer berret bertre berube betere betete betrue bettee better bettor betutu beurre bexter bextor bobber bobcut bobete bobote boccob boeber boerre boober booboo bootee booter booue borbor boreto borore bororo borte botere botero botete botoro botree botter boture boubou boueer bouree bourou bourre bouter boutet boutob boutre boutte boxout boxrec breere bretcu brette bretuo breuer brocco brocor brocot broter brotox brotto brouet broute brubru bruree brutto bruxer bubber bububu bucco- burbet burbot burbur burcer burcot burotu burree burrer burret burutu butbro butere butter buttto butucu buutuo buxoro c-cube ceecee cerco- cerete cerote certco ceruce cetore cobber cobbob cocco- cococo cocto- coerce coo-er coocoo cooter corbet corect corour corteo cortex cortot coruco coruro cotote cotter courbe courbu cource couret courr- couter coxcox crecco creete creote crobex crobot crocco crocer croote croute cruro- cubber cubero cubert cubube cucube cucurb curber curete curour currer curret curror curter curtoe cururo cutcut cutout cuttee cutter cuttoe cuttoo e-text ebbert ebbout eburru ecobee ecobot ecotec ecourt ecoute ectro- eebree eerect eototo erbree eroto- errett errour etcetc etoeot etreux ettore ettutu eucort euroto eururo eutere euttob excoct excrex exerce exeter exocet exorte extort extro- exturb oberto obrute obtect obtree obturb occour occure ocourt ocreo- octett octree octuor oerter oooooo orcure orcutt orrour otocec ottoor ouerre ouroux out-be outbox outcut outour outreb outter outtro oxeote r-tree rebbec rebeuc reboot rebore rebote rebour rebute recoct recore recour recreo recrue recto- rector recuer recurb recure recurt rerobe reroot retece reteer reteet reteoo retere retore retort retour retree retret retro- retrot retter rettur retube returu reuere reuour reuter reutte robber robeco robert robeux roboto rococo