bbbb bbdd bbdo bd-r bdii bdmi bdrm bibb bibi bibo bidi bido bidr bidu bimo bio- bioi biou birb bird biri biro birr biru bmdb bmir bmmi bobb bobi bobo bobu bodb bodi bodo bodu boi- boid boii boim boiu bomb bomi bomu boob bood boom boor bor- bord bori borm boro borr boru boud boum bour brdm brdo brid brim brio brob brod brom broo bror brou brrm brrr brud brum bubb bubi bubo bubu budb budd budi budo budu buid buir buiu bum- bumb bur- burb burd buri burm buro burr buru d-bo dddd ddub dibb dibo didi dido didu diii dimi dimm dimo dimu dior diou dird dirr dmrb dobb dobi dobu dod- dodd dodi dodo doid domb domi domm domo doob dood doom door dord dori dorm doro dorr doru doub doud doum dour drib drob drod drom drou drub drui drum druu dub- dubb dubu dudd dudo dudu duid duir dumb dumi dumm duo- duri duro duru duur ibbm ibdo ibid ibim ibrd ibri ibro idbm iddm iddo idid idio idir idro idub iduo iiii iiio iioi iioo iium imbi imdb imdi imid imir immi immo imod imou imri imro imrr iobi iod- iodd iodo ioii ioio iomo iooi iooo iori irbm irdo iri- irid irio irmo irob irod irri iuiu mbdb mbim mbio mbou mddm mdii mdud mid- midi mido miii miio mim- mimd mimi mimo mio- mird miri miro mirr miru miui mmdb mmdi mmii mmmd mmmm mmod mmor mobb mobi mobo modd modi modo modu moii moio moir momi momo momu moob mood moor morb mord mori moro moru moud mour mrbb mrbm mrdd mrmd mrud mubi mubo mudd mudi mudu muid muir mumm mumo mumu murd muri muro murr muru obbo obid oboi obor obri obro odbo oddd oddi odio odir odiu odmr odom odoo odor odou odum odur oido oiii oimb oium ombo ombu omdb omid omim omio omo- omoi omoo omor omri omro omuo oobi oodi ooid oooo oord orbb orbi orbo orbu ordo ordu ori- orid orio ormo oro- orom oror orri orro orub orum ouii ouir oumi our- ouro ouu- rbbb rbbr rdbm rdio rib- ribo ribu ridd ridi rido rimi rimm rimo rimu riom riou riri rob- robb robi robo robu rodd rodi rodo roid roio roir roiu romb romd romi romm romo roob rood rooi room roor rori roro roru roub roud roum rrrr rrum rubb rubi rubu rudd rudi rudo ruid rumb rumi rumm rumo rurd ruri ruro ruru ruud ubbi ubbo ubid ubii ubir ubod ubud uddi udid udim udir udoo uirr umb- umbi umbo ummo umor umri uomo uor- urbi urdu urib urim uriu urmi uro- urom uroo urri urum urur uuri uuuu