-tree bbbee be-er be-ro bebel beber beblo bebot beebe beele beete beeut beeve belbo belee belet bellb belle bello belot belov belue belur belut beote beour berbe berel beret berle berlo berob beroe berol beror berre berru berte berto betee betel beter betle betoo betor betou betre bett- bette betto betul beuer beule beure beute beuve bevel bever bevor bevue bleer bleet blere blete bleue bleve bloor blorb blore blort blote bloto blott bloue blout bluer bluet blurb blure blurr blurt bluto bo-bo bobet boble bobov bobr bobre boeol boero boeur bolbe bolel boleo boler bolet boll- bolle bollo bollu bolte bolto booer boole boore boort booru borbo boree borel borer boret borle boro- boroo borot borou borov borre borro borul borut borve borvo botel botet botev botou botro botte bottu bouee bouel bouer bouet boul- boule boulo boult boure boute bouto bovee bovel brebu breel breer breet brell brelo breo- brere breto brett breu- breve brobo broer brole broll brolo brool broto broue brout brrrr bruer bruet brule brull brute btr-t bubbe buber buble buell bulb- bull- bulle bulou bulto bulul bulut buolt burel buret burle burol buroo burov burro burru burte burtt burut buteo buter butle buto- butor butot butou butov butte butuo butut ebber ebbet ebble ebell ebelo eberl ebert eblul eboue ebull ebure eeeee eeler eevee eever elbot eleet elele eleo- eleot eleut eleve ellel eller ellet elloe ellul eloee elole eloor elore eloro elote elout elrob eltro elubo elulu eluru elute elver elvet eorre erbbe erber erere ereve eroor erore eroto errol error errtu erte ertel erter etete etoll etool etoro etour etree ettel etter ettle eturu eubro euell euler eurel euro- eurre evell evere evero everr evert evete evett eveve evolo evolv evoor evote evour evvol lebel leber lebet leell leere leert leeve leleu lelle lelov leove lerer lerot letbe letot letov letre lette letto letur leuro levee level lever levet levo- levor levre levuo lobbe lobbo lober loble lobo- lobor lobov loeve loler lollo lolol loobu looer loore loote loove lorel loreo lorer loret lorre lorut lotor lotru lotte lotto louer loule loure louro lovee lover lovet loveu lovre lovro lubbe luber luble lubov lubur luebo lueve lulle lulov lulte lulul lurer lurue lurve lute- luteo luter lutol lutte lutto luver lvovo o-r-b obbet obele obert obete obole obolo oboro obote oboue obout obreb obrov oelet oelve oerel oerle oleo- olere olleo oller ollur olotu olour olovo oltet oltre olver oo-er ooooo oovoo orble orbot orell oreo- orere orero orlet orlov orobe orobo oroer orolu orout orret orter ortet ortoo orube oruro orutu orvet otell otelo otere otero otole otolo ototo otour otrov otter ottov ottur otulu oture oubut ouert oullo ouoro oure- ourol outer outre outro outto outtv ouver ouvre over- overo overt ovett ovolo ovule rebbe rebel reber rebet rebol rebut reere reeve relee relet rello relot relov relte relue rere- reree reret rerob retee retel reter retro rette retto reuel reuer reuet reule reute revel rever revet revle revol revue ro-ro robbe robbo rober roble robo- robor robot robrt robte robur roell roero roleo rolle rollo rooer roole roore roote rooue roove rorbu rorer roteb rotel roter rotle roto- rotol rotor rotot rotte rotto roubt rouer rouet roule roull roure route routt rover rtrev rttov rubee rubel ruber ruble rubor ruele ruell ruere ruete ruler rullo ruter rutle rutte rutul ruule ruutu rvlot tbolt tbtbt tbutt teber tebet teele teell tele- teleo teler teleu tell- telle tello telo- telve teolo teotl teret tereu teror terre terro tert- teruo terve tervo tetel teter tetle tetov tetr- tetro tette teuto teuvo tevel tevet tevot tlell tlett tllbr to-be tobbe tobel tober tobet tobol tobor tobot tobou tobre toerr toeto tolbo toler tolet tolle tollo toloo tolor tolu- tolve toobe toole toolt toore torbe torel toreo toret torob torre torro torte torto tortu torue torul torve totel toter totle toto- totoe totoo totte touel toule toull toure touro toute tover tovet treer treet trele trere trete trett treut treve troee troll trott troue troul trout trove trovo trubu truel truer trule trull truro trute trutv truvo ttttt tuber tubo- tubou tubul tuell tuelt tuero tulet tulle tulor tulou tuotu turbe turbo turbt turel turet turle turot turov turre turro turtu turul turut turve turvo tutee tutel tuteo tutle tutor tutte tutto tuuru tvtel ubble uber- ubobo ubolt ullet ullur ulteo ultre ululu uluru ulver uouee urelu ureo- uroob urour urtel urter urtlu urubu urutu utebo uter- utero utole utro- utror utter uttur utube uturu ututo uuuuu uvele uvrou uvule v-bob v-bor veber vebre veele veell veere veeve velet velev velle vello velur veole veoll verbo vereb verel verlo verol verot verre verte vertu verul verve vetel vetle vette vetto veuve veveo vever vlott voere volee voler volet volle volot volte volto volue volve volvo voobu voore vooru vorbe vorel vorre vorte votel voter votre votto voult voulu voure voute vrbov vreel vrelo vuele vuelo vuere vulv- vulve vurot vutov vuver