bmp-r bo-bo bobr bobup bombo boomb boort booru borbo bormo boro- borom boroo borot borou borro borum borup borut botom botou botro bottu bouto brmmm brobo brom- bromo broom broto brout brrrr brumm btr-t bumbo bumbu bumpo buroo burro burru burtt burut buto- butor butot butou butuo butut mboro mburu mmmmm mobor mobot mobro mombo mombu momot mooro mooto mopup morbo mormo morop moror morou morro morum morup morut moto- motor motru motto mottu mpbou mrmom mrorr mt-tm mt-tp mt-tr mt-tt mtoto mumbo mummu muppu murom muror murot murro murru murum murup murut muto- mutum mutuo muuto o-r-b oboro obout obrom omoro omoto omout omupo ooooo opobo oppum opto- optot optto opump orbom orbot ormur orobo oromo orout orrum ortoo oruro orutu otomo ototo otour otpor ottom ottur oubut ouoro outro outto po-po pombo pomor pompu pomum poopo poort popop poppo popup poro- porro porto portu porum porur potom potoo potop potor potro potto pottu probo promo promt proor proot prop- propp propr propt prot- proto prout prtor ptprb ptprm ptpro ptprr ptprt ptpru pubo- puppo purmo puro- purum putor putt- putto puttu putuo putup rmutt ro-ro robbo robo- robop robor robot robrt robur rompo rompt rompu roomu rorbu roto- rotor rotot rotto roubt roumm routt rprop rptor rubor rubup rumbo rummo rummu rumor rumpo rumpt ruomu ruutu t-pop t-top tbtbt tbutt tobor tobot tobou tombo tombu tommo tomo- tomom tomor topbt topo- topor topot toppo toptb topto topup torob torpo torro torto tortu toto- totoo totop totum totup touro tprot tromm tromp troop trop- tropo trott troum troup trout trubu trump trupt truro ttttt tu-mo tubo- tubou tumbo tumbu tummo tumor tumut tuomo tuotu tupou turbo turbt turot turro turtu turup turut tutor tutto tuuru u-pop ubobo umbro umour upput uptop uroob urour urubu urutu utro- utrop utror utrum uttur uturu ututo uuuuu