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 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 breere bretcu brette bretuo breuer brocco brocor brocot broter brotto brouet broute brubru bruree brutto bubber bububu bucco- burbet burbot burbur burcer burcot burotu burree burrer burret burutu butbro butere butter buttto butucu buutuo c-cube ceecee cerco- cerete cerote certco ceruce cetore cobber cobbob cocco- cococo cocto- coerce coo-er coocoo cooter corbet corect corour corteo cortot coruco coruro cotote cotter courbe courbu cource couret courr- couter crecco creete creote 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 ebbert ebbout eburru ecobee ecobot ecotec ecourt ecoute ectro- eebree eerect eototo erbree eroto- errett errour etcetc etoeot ettore ettutu eucort euroto eururo eutere euttob oberto obrute obtect obtree obturb occour occure ocourt ocreo- octett octree octuor oerter oooooo orcure orcutt orrour otocec ottoor ouerre out-be outcut outour outreb outter outtro 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 roboto rococo rocoto rooter rootte rorter rotour rotout rotrou rotter roture roucou router routot rubbee rubber rubbot rubout rubro- rubutu ruocco rurutu rutour ruttee rutter rutube t-tree t-tube tecto- tector teebee teetee teeter tercer tercet terete terreo terrer terret terror terrot terrou terter tertre tetete tetter teucer to-cut tobeor toboot toccer toeout toetoe tooter tootoo torcec torero tororo torret tortor tortou tortue totebo totoro totrot totter toubbe tourbe tourer touret tourou tourte touter toutou toutuo tr-rec trebce treboc trebor trebur treece treete tretee trette treuce trotec trotro trotte trucco trueto truett tubber tubboe tuorbe tuotuo turbet turbo- turbot turret turtur turucu tururu tuteur tutour tutter tuttut u-boot u-tube uberto ubetoo urecco ureter urette urouer uroure utero- uteute utroor