bbbb bobb bobo bobu bokn boko boku bomb bomu bonk bonn bono bonu boob book boom boon bouk boum boun bubb bubo bubu bukk buko buku bum- bumb bunb bunk bunn buno bunu buon kbbb kbbk kbbm kbbo kbbu kbkb kbkk kbko kbmb kbmo kbnn kbno kbnu kbob kbok kbon kboo kbub kbuk kbun kbuu kkbb kkbn kkbo kkkk kkmk kkmo kknb kknm kknn kkno kknu kkob kkon kkoo kkuu kmkk kmko kmmk kmmm kmmo kmnb kmob kmok kmom kmon kmou kmun knbb knbn knbu knkk knmb knnb knnk knob knok knom knon knou knub knuk kobb kobk kobn kobo kobu kokb kokk kokn koko koku komb komo konk kono koob kook koon kooo koou koub koum kouu kubb kubo kubu kukk kukn kuku kumm kumo kumu kunk kunm kuno kunu kuok kuon kuoo kuub kuuk kuuu mbou mknk mmmm mmun mnbb mobb mobo moko momo momu mon- monk monn mono monu moob mook moon mouk moun mubo muko mumm mumo mumu munk munn muno munu muon nbbo nkok nkum nmon nnnn nobm nobo nobu noko nom- nomo nomu non- nonn nono nonu noo- noob nook noon nooo noun nubk nuku numb numm numu nunk nunn nuno nuon nuuk obbo obkb obok obon okko okmo okno okok okom okon okun ombo ombu omn- omo- omon omoo omuo onno onon ooku oooo oun- ouu- ubbo ubon ukko ukok ukon ukum umb- umbo ummo umno umok unkn unko unno unon unum uomo uuno uuuu