bbbb bbdd bbdo bbng bbrg bd-r bdog bgon bgun bnor bnrr bobb bobo bobu bodb bodo bodu bogd bogg bogo bond bong bonn bono bonu boob bood boog boon boor bor- bord borg born boro borr boru boud boun bour brdo brno brob brod brog bron broo bror brou brrr brud brug brun bubb bubo bubu budb budd budg budo budu bugg bugo bunb bund bung bunn buno bunu buon bur- burb burd burg burn buro burr buru d-bo dbrn dddd ddub dobb dobu dod- dodd dodg dodo dog- dogg dogo dogu dond dong donn dono donr doob dood doon door dord dorn doro dorr doru doub doud doug doun dour drno drob drod drog dron drou drub drug druu dub- dubb dubu dudd dudo dudu dugu dung dunn duno duo- duon durg durn duro duru duur gbbo gbon gddb gdor gggg ggrn gnod gnoo gnrr gobo godo gogo gon- gond gong gonn gono gonu good goog goon goor gorb gord gorg gorn goro gorr gou- goud goug goun gour grbr grob grod grog gron groo gror grou grrr grub grug grun grur gubb gubu gudo gudu gugb gugg gugu gund gung gunn gurb gurd gurg gurn guro gurr guru nbbo nddb nddo ndor ngon ngor ngou ngur nguu nndb nngn nnnn nobo nobu nodo nodu nogg nogo non- nong nonn nono nonu noo- noob noon nooo noor nor- norb nord norg norn noro norr noun nour nron nrrd nudd nudo nung nunn nuno nuon nurd nurn nurr nuru obbo obon obor obro odbo oddd odnb odon odoo odor odou odur ogb ogod ogog ogon ogou ogro ogun ondo ongo ongu onno onod onon onor onur oooo oord orbb orbo orbu ordn ordo ordu orgn orgo orno oro- oron oror orro orub oun- ound oung our- ourn ouro ouu- rbbb rbbr rnbr rnod rob- robb robo robu rodd rodo rogg rogo rond rong rono roob rood roog roon roor roro roru roub roud roun rrrr rrun rubb rubu rudd rudo rugg rund rung runn runo rurd ruro ruru ruud ruun ubbo ubod ubon ubud udgb udon udoo udun uggo ugod ugro ugur uguu unbd undo ungo ungu unno unon unro uor- urdu urgu uro- uroo urun urur uuno uuuu