-tree b-e-d bbbee bd-re bdoor bdort be-er be-ro bebdo bebed beber bebod bebot bedde bedee beder bedet bedot bedub bedue beebe beede beerd beete beeut beode beord beote beour berbe berde berdu bered beret berob beroe beror berre berru berte berto betee beter betoo betor betou betre bett- bette betto beuer beure beute bo-bo bobet bobr bobre bodd- boded boder bodoe bodor boedo boero boeur boode booed booer boord boore boort booru borbo borde bordo bored boree borer boret boro- borod boroo borot borou borre borro borut botet botou botro botte bottu boudu boued bouee bouer bouet bourd boure boute bouto brebu bredd brede bredt breed breer breet breo- brerd brere breto brett breu- brobo brodd brode brodo broer brood broto broud broue brout brrrr brud- brude brued bruer bruet brute btr-d btr-t bubbe buber budde buddu budur buord burde buret buroo burro burru burte burtt burud burut butdo buteo buter buto- butor butot butou butte butuo butut d-dot d-rod ddddd ddebo debed deber debet debot debro debte debut dedde dedee deder dedur dedut deede deere deore deoro derbe derde dered dero- derob derre derro derub derue deter detoo detre dette detuo detur deure deut- deuto do-do dobee dober dobre dobro dodoo dodro doerr doodo doore doote doout dordt dored doree doret dorot dorre dorte dorud doted doter dotoo dotto doubt doude douer doure douro doute drbob drdre dredd drede dreed drere drobe drobo drode drood drote drott droue drout drude dtour dubbo dubee duddo duded duder dudou duere duerr duete dueto duett durbe dured duree durer duret durre durte durtu dutte e-dee e-otd ebbed ebber ebbet ebert eboue ebure edder eddoe eddre edeo- edere edoor edott edred eeeee eerde eorre erbbe erber erdor erdre erdut erede erere erode erodr eroor erore eroto erred error errtu erte erter etete etoro etour etree etter etude eturu eubro euro- eurre o-r-b obbet obedt obert obete obodo oboro obote oboue obout obreb obudu odder oddur odebo odeto odeur odore odour odudu odure oduro oo-er ooooo orbed orbot order ordet ordre ordro oredo oreed oreo- orere orero orobe orobo orodo oroer orout orret orter ortet ortoo orube oruro orutu otere otero ototo otour otter ottur oture oubut ouder ouedo ouert ouoro ourde oure- outdo outed outer outre outro outto rebbe reber rebet rebud rebut redbd redde reder redor redot redub redur reede reere reord rerde rere- reree reret rerob reted retee reter retro rette retto reuer reuet reute ro-ro robbe robbo robed rober robo- robor robot robrt robte robur rodbo rodde roded rodeo roder rodor roero roode roodu rooer roore roote rooue rorbu rorer roteb roted roter roto- rotor rotot rotte rotto roubt roude rouer rouet roure route routt rubee ruber rubor ruder ruede ruere ruete rurde ruter rutte ruutu tbtbt tbutt teber tebet teder teerd teodo teret tereu teror terre terro tert- teruo teter tetr- tetro tette teuto to-be to-do tobbe tobed tober tobet tobor tobot tobou tobre toder todor toerr toeto toobe toode tooed toord toore torbe torde tordu tored toreo toret torob torre torro torte torto tortu torud torue toted toter toto- totoe totoo totte tourd toure touro toute treed treer treet trere trete trett treut trode troee trood trott troue trout trubu trude trudo trued truer truro trute ttttt tubed tuber tubo- tubod tubou tuder tudor tudou tudre tudur tuero tuotu turbe turbo turbt turet turot turre turro turtu turut tutee tuteo tutor tutte tutto tuuru u-dub uber- ubobo udder udert uouee urdee uredo ureo- uroob urour urter urubu urutu utebo uter- utero utrdb utro- utror utter uttur utube uturu ututo uuuuu