ouu- rbbb rbbr rib- ribo ribu riff rifu riif riin rimi rimm rimo rimu rinf rinn rino riom rion riou riri rmif rmon rnbr rnin rob- robb robi robo robu roff rofo roif roin roio roir roiu romb romi romm romo roni rono roob roof rooi room roon roor rori roro roru roub rouf roum roun rrif rrrr rrum rrun rubb rubi rubu ruff rufo ruif ruin rumb rumi rumm rumo runf runi runn runo ruri ruro ruru ruun ubbi ubbo ubii ubir ubon uirr umb- umbi umbo umff ummo umno umor umri uni- unif unii unin unio unir unmr unni unno unon unrf unro unum uofm uofo uomo uor- urbi urff urfi urib urif urim urin uriu urmi urni uro- urom uroo urri urum urun urur uuni uuno uuri uuuu

-form -minu bibbo bibin bibio bibri biffi biffo bifor bimbo binom binub birin birmi birni biron birou birum birun birur bmiii bo-bo bobbi bobin bobr bobri boffi boffo boiro bombo bonin bonio bonon bonou bonum boomb boomf boorn booru borbo borim borin borio bormo born- borno bornu boro- borom boron boroo borou borro borum borun bouin bouni bouri bourn brifu brimm brimo brini brinn brion briou brmmm brobo broin brom- bromo broni bronn broom broon broun brrrr bruff bruin bruiu brumm bruni brunn bruno bruri bruun bubon buffi buffo buirn bumbo bumbu bunin bunun buono burfi burim burin burio burn- buron buroo burri burro burru burun buumi fbomb fibr- fibro fiini fimir finif finno fionn fiori firmi firmo firon firou fofum foini foir- fomin fomon fomor fonio fonni forio form- forni forno forro forum forur fourb fourm fouro fromm froom frorn fu-fu fumin fumio fuoni fuorn furbo furin furio furir furo- furor i-bon i-m-r ibbur ibibo iborn if-- iffou ifin iform iiiii iiuni imfor imin- imino imoff imoni inbin infin info- infor infun inimi inini inio inio- inion inniu inoff inonu inoor inorb inori inorm inour inrio inrun inurn iommi iono- ioooi ioooo iorio irimi irinn irion irmin irobo irono irori irour iufni iunno mbini mbiri mbnfn mbori mboro mburu mi-mi mibor miffo mimbo mimio mimir mimmi mimo- mimon minbo minbu mini- minim minin minio minmi minni minom minon minor minum miour mirim mirin miron mirri mmfbm mmiii mmmmm mnium mobor mobro moffo moiff mombi mombo mombu momin momir momoi monfi monin monno mono- monon monor monro moooi moori moorn mooro morbi morbo morfu morib morin morio mormo morni moroi moron moror morou morro morum morun mouni mouri mourn mrmom mroof mrorr mufon muiri mumbi mumbo mummu mumun munib munif munin munir munro murin murmi muroi murom muron muror murri murro murru murum nbomb nibbi nifon niibi niimi nimbi nimmi nimmo nimno nimri ninib ninon ninur niono nioro nirim nirom nnooo no-fi no-no nobin nobob nobuo nofim nofor nofou nofun nomin nomir nommo nomo- nomom non-u nonin nonio nonni nonno noomi noonu noori norbu norin norio norm- noron norro norum norun nouni nouri nroff nu-nu numbi nummi nunni nunon nunun nuoro nurin nurmi nurmo nurri nurun o-bon o-r-b obimo obion oboro obrom offin offir offof offon offun ofono ofori oforn ofour ofrum oino- oinoi oiron omino ommin omni- omnio omoon omoro omron onfim onibi onin oniom onion onir- oniro onium onmun onoff onoon onorn onour onrio ooioo oonin ooooo orbom orfor oribi orino orion orium ormur orni- ornon orobo oromo orono orrin orrum oruro ouir- ouoro ourno ri-fi ribbi ribin ribno ribo- ribon rimbo rimmi rimon rimou rimur rioni rmnmn ro-ro robbi robbo robin robo- robon robor robun robur rofor romfo romni romon ronin ronno roomu rorbu roumi roumm rubbi rubim rubin rubio rubof rubon rubor ruffo rufi- rufio rufo- ruino ruiru rumbo rumin rummi rummo rummu rumor runin runo- runof runon ruomu u-n-i u-nii ubirr ubobo ufofu uforb uiro umbri umbro uminn umiri umour unfun unfur unifi unini uninn union unnim unnun unnur unoor unorn unrun unurn urin- uromi uroob urour urubu urumi ururi uuuuu

b-room bbbbbb bibiri bibiru biffin biform biforn bifoun bimini bimuno binino biniou bio-in biobor biomin biomom biribi birini birori bminor bobbin bobbio bobino bobiri bobrun boffin boinn boiron bombom bombon bombur bonbon bonfim bonini bonino bonnin bonnor bonobo bonomi bonomo bononi booboo boom-o borbon borbor borino borium bormio bornin bornof bornon bornum boromo bororo boruni boubou bounou bourou bribir bribri brimir brinno brioni bromio bromo- bronin bronno brouin brubru bruino brunii bruron bubbio bubino bubion buborn bububu buffin buffon buffum bufori bumboo bunion bunium burbur burion burior buriro burnin burnou burnum burrio bururi f-bomb fibrin fibro- finiff finion finnif fiorin firmin firmor fminor fobiri foboff fombio fonmon foofoo foofur foorum forbin forbon forfun forino formin formo- fornim foroni foufou fourbi fourin fourof fourou frbroo fumoir fumoon funoon funorb funori funrun furfur furoin furour furrfu furrin furuno ibibio ibrium ifumbo iiooio imino- imirim immuno imoinu in-off inborn inburn infini infirm inform infrom iniomi iniron inmobi inmono inroom ionion ionium irmino ironii ironin ironon irrour mbombo mbomou mbooni miburi mifumi mimino mimori mimoun minimi minimo minion minium minnom minnum minori minoro minoru minour minron miombo miomir miroir mirour mirror mirumo miruru moffom moffou mofibo moiron mombin mommur momoir monfri monino monion monium monroi moomin moomoo moormi morbio moribi morini morino morion moriro mormon mormor mormur mornif mornin moroii moroni moroun morrin mouron mourou mrnoon muffin muffro munion munnur muonio murfin murio- murium murmir murmur muroni murrin muumuu n-bomb nibiru nibrin niburu nimbin nimbo- nimono nimrim nimrin ninino niomon nirmon no-rin nobbin nobori noboru noforn noiron nombur nomnom nomoon nomori non-no nonini nonino nonono nonoon noonoo noonor norium normo- normob noroff noromo noroof noroom norrin nounou nrrfrm nubbin nuffin numfor nummi- numoni numori nunmor obfirm oborin of-run offrir ombro- ombuin omfori omiini omnibi omnium omoio- on-off onfirm oniro- onnion onnuri ononin onufri onuimo oooooo oriomo ormuri orobii oromoo orrour ouioui ouroun ribbin ribbon ribino riffin rififi rimbor rimini rimmon rirumu robbin robbio robion robomb rombin romiri romour ronino ronion ronnon ronron roomon rounin rounou rubbon rubini rubino ruboff rubro- rubrum ruffin rufino rumbur rumino rumour run-in run-on runfor runnin runoff runumi u-form ubombo uburoi uminum umirim