bbbb bbdd bbdo bbfn bduf bmdb bobb bobo bobu bodb bodo bodu bofd boff bofu bomb bomu bond bonn bono bonu boob bood boof boom boon boud bouf boum boun bubb bubo bubu budb budd budo budu buff bufo bum- bumb bumf bunb bund bunn buno bunu buon d-bo dbfo dddd ddub dmbf dobb dobu dod- dodd dodo doff domb domm domn domo dond donn dono doob dood doof doom doon doub doud douf doum doun dub- dubb dubu dudd dudo dudu duff dufu dumb dumm dunn duno duo- duon fbom fdnm fdom ffff ffun fmno fmod fndd fndn fnuf fofo fomo fond fono food foof foom foon foud foun fubb fubu fudd fuff fufu fumo fund funf mbdb mbou mdbf mddm mdmf mdud mfbm mfou mmdb mmdf mmfd mmff mmmd mmmm mmod mmun mnbb mndo mobb mobo modd modo modu moff mofo mofu momo momu mon- mond monn mono monu moob mood moon moud mouf moun mubo mudd mudu muff mufu mumm mumo mumu mund munn muno munu muon nbbo nbuf ndbm nddb nddo ndom nfff nfon nmff nmon nndb nnnn nobm nobo nobu nodo nodu nom- nomo nomu non- nonn nono nonu noo- noob noon nooo noun nudd nudo nuff numb numm numu nunn nuno nuon obbo obon odbo oddd odnb odom odon odoo odou odum off- offo offu ofno ombo ombu omdb omn- omo- omon omoo omuo ondo onno onod onon ooff oooo ouff oun- ound ouu- ubbo ubod ubon ubud udon udoo udun umb- umbo umff ummo umno unbd undo unfd unno unon unum uofm uofo uomo uuno uuuu