bbbb bbdd bbdo bbgm bbmg bbrg bd-r bdog bdrm bmdb bobb bobo bobu bodb bodo bodu bogd bogg bogo bomb bomu boob bood boog boom boor bor- bord borg borm boro borr boru boud boum bour brdm brdo brob brod brog brom broo bror brou brrm brrr brud brug brum bubb bubo bubu budb budd budg budo budu bugg bugo bum- bumb bur- burb burd burg burm buro burr buru d-bo dddd ddub dmrb dmrg dobb dobu dod- dodd dodg dodo dog- dogg dogo dogu domb domm domo doob dood doom door dord dorm doro dorr doru doub doud doug doum dour drob drod drog drom drou drub drug drum druu dub- dubb dubu dudd dudo dudu dugu dumb dumm duo- durg duro duru duur gbbo gddb gdor gggg gmmr gmod gobo godo gogo gomb gomo gomu good goog goom goor gorb gord gorg gorm goro gorr gou- goud goug goum gour grbr grob grod grog grom groo gror grou grrr grub grug grum grur gubb gubu gudo gudu gugb gugg gugu gumb gumm gumo gurb gurd gurg guro gurr guru mbdb mbou mddm mdud mgrm mmdb mmmd mmmm mmod mmor mobb mobo modd modo modu mogg mogo mogu momo momu moob mood moog moor morb mord morg moro moru moud mour mrbb mrbm mrdd mrmd mrud mubo mudd mudu mugg mugo mugu mumm mumo mumu murd murg muro murr muru obbo obor obro odbo oddd odmr odom odoo odor odou odum odur ogb ogod ogog ogou ogro ogum ombo ombu omdb omo- omoo omor omro omuo oooo oord orbb orbo orbu ordo ordu orgo ormo oro- orom oror orro orub orum our- ouro ouu- rbbb rbbr rdbm rmrg rob- robb robo robu rodd rodo rogg rogo romb romd romm romo roob rood roog room roor roro roru roub roud roum rrrr rrum rubb rubu rudd rudo rugg rumb rumm rumo rurd ruro ruru ruud ubbo ubod ubud udgb udoo uggo ugod ugro ugur uguu umb- umbo umgo ummg ummo umor uomo uor- urdu urgu uro- urom uroo urum urur uuuu