b-tree bbbbbb bebeto bebout beebee beeter bejjur berbee berbeo berber bereet berere berjou berour berrer berret bertre berube betere betete betrue bettee better bettor betutu beurre bjerre bjorbo bobber bobete bobote boeber boerre bojort 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 brette bretuo breuer broter brotto brouet broute brubru bruree brutto bubber bububu bujejo bujoru burbet burbot burbur burotu burree burrer burret burutu butbro butere butter buttto buutuo ebbert ebbout eburru eebree eototo erbree eroto- errett errour etoeot ettore ettutu euroto eururo eutere euttob jbrout jebbet jeerer jeobet jettee jetter jettru jeurre jobber joojoo jorjor jorour jotter joueur jourer jubbet jubett jubjub jujo jujube jurere jurour jutout oberto objure obrute obtree obturb oerter oooooo orrour ottoor ouerre out-be outjet outjut outour outreb outter outtro r-tree reboot rebore rebote rebour rebute rerobe reroot reteer reteet reteoo retere retore retort retour retree retret retro- retrot retter rettur retube returu reuere reuour reuter reutje reutte robber robert roboto roju rooter rootte rorter rotour rotout rotrou rotter roture router routot rubbee rubber rubbot rubout rubro- rubutu rurutu rutour ruttee rutter rutube t-tree t-tube teebee teetee teeter terete terreo terrer terret terror terrot terrou terter tertre tetete tetter tjejer tjetju tjurbo tobeor toboot toejob toeout toetoe tooter tootoo torero tororo torret tortor tortou tortue totebo totoro totrot totter toubbe tourbe tourer touret tourou tourte touter toutou toutuo trboje trebor trebur treete tretee trette trotro trotte trueto truett trujet ttujur tubber tubboe tuorbe tuotuo turbet turbo- turbot turret turtur tururu tuteur tutour tutter tuttut u-boot u-tube uberto ubetoo ureter urette urouer uroure utero- uteute utroor