bdoor bdort bo-bo bobr bodd- bodor bondo bonon bonou bonud bonut boond boont boord boorn boort booru borbo bordo born- borno bornt bornu boro- borod boron boroo borot borou borro borun borut boton botou botro bottu botun boudu bound bourd bourn bouto brobo brodd brodo brond bronn bront brood broon broto broud broun brout brrrr brud- brunn bruno brunt bruun btr-d btr-t btron bubon buddu budur bundt bundu bunud bunun bunut buono buord burn- burnt buron buroo burro burru burtt burud burun burut butdo butno buto- buton butor butot butou butuo butut d-dot d-rod ddddd do-do dobro dodon dodoo dodro dondo donon donor donot donut doodo doorn doout dordt dorno doron dorot dorud dotoo dotto doubt dount douro drbob drobo drood droon drott droun drout dtour dturn dubbo dubno dubon duddo dudon dudou dundo dunno dunod dunun duont durno duron durtu ndour nduru nnooo no-do no-no nobob nobuo nobut nodto non-u nondo nonno nonot noonu noord noort norbu nordo noron norro nortt norun notdo notno noto- noton notto nourt ntntd ntoro nu-nu nudur nunon nunun nuodb nuoro nurun nuton o-bon o-r-b obodo oboro obout obudu oddur odont odour odudu oduro onond onont onoon onorn onoto onour onout onto- ontoo ontur ooooo orbot ordon ordro ornon ornot orobo orodo orono orout orton ortoo oruro orutu otono ototo otour ottur oubut oudon ouoro ourno outdo outon outro outto ro-ro robbo robo- robon robor robot robrt robun robur rodbo rodon rodor rondo ronno ronto roodu roond rorbu roto- roton rotor rotot rotto rotun roubt round rount routt rubon rubor rudno rundu runo- runon runto ruutu t-nut tbond tbtbt tbutt tntnt to-do tobon tobor tobot tobou todor tonbu tondo tondu tono- tonod tonto toord tordu torob toron torro torto tortu torud torun toto- toton totoo tourd tourn touro trond trono trood troon trott trout trubu trudo truro ttttt tubo- tubod tubon tubou tudor tudou tudun tudur tundu tunon tuotu turbo turbt turn- turno turnt turnu turon turot turro turtu turut tutor tutto tutun tuuru u-dub ubobo unbud undub undun undur unnun unnur unnut unoor unorn unrun unurn uroob urour urubu urutu utrdb utro- utror uttur uturn uturu ututo uuuuu