bbbb bnor bnrr bobb bobo bobu bokn boko boku bomb bomu bonk bonn bono bonu boob book boom boon boor bor- bork borm born boro borr boru bouk boum boun bour brkb brno brob brok brom bron broo bror brou brrm brrr brum brun bubb bubo bubu bukk buko buku bum- bumb bunb bunk bunn buno bunu buon bur- burb burk burm burn buro burr buru kbbb kbbk kbbm kbbo kbbr kbbu kbkb kbkk kbko kbkr kbmb kbmo kbmr kbnn kbno kbnr kbnu kbob kbok kbon kboo kbrb kbrk kbrn kbro kbru kbub kbuk kbun kbur kbuu kkbb kkbn kkbo kkbr kkkk kkmk kkmo kkmr kknb kknm kknn kkno kknu kkob kkon kkoo kkor kkrb kkrk kkrn kkro kkrr kkuu kmbr kmkk kmko kmmk kmmm kmmo kmmr kmnb kmnr kmob kmok kmom kmon kmor kmou kmrb kmrn kmro kmrr kmun kmur knbb knbn knbr knbu knkk knmb knnb knnk knnr knob knok knom knon knor knou knrb knrk knro knub knuk knur kobb kobk kobn kobo kobr kobu kokb kokk kokn koko kokr koku komb komo komr konk kono koob kook koon kooo koor koou korb kork korn koro korr koru koub koum kour kouu krbb krbk krbm krbr krkk krkn krko krkr krku krmb krmn krmo krmr krnb krnk krnm krnn krno krnu krob krok krom kroo kror krrb krrk krrm krrn krro krrr kruk krum krun krur kubb kubo kubr kubu kukk kukn kuku kumm kumo kumr kumu kunk kunm kuno kunr kunu kuok kuon kuoo kurb kurk kurm kuro kurr kuru kuub kuuk kuur kuuu mbou mknk mmmm mmor mmun mnbb mobb mobo moko momo momu mon- monk monn mono monu moob mook moon moor morb mork morn moro moru mouk moun mour mrbb mrbm mrkr mron mruk mubo muko mumm mumo mumu munk munn muno munu muon murk murn muro murr muru nbbo nkok nkor nkum nmon nnnn nobm nobo nobu noko nom- nomo nomu non- nonn nono nonu noo- noob nook noon nooo noor nor- norb nork norm norn noro norr noun nour nron nubk nuku numb numm numu nunk nunn nuno nuon nurn nurr nuru nuuk obbo obkb obok obon obor obro okko okmo okno okok okom okon okor okro okun okur ombo ombu omn- omo- omon omoo omor omro omuo onno onon onor onur ooku oooo orbb orbo orbu orko ormn ormo orno oro- orok orom oron oror orro orub orum oun- our- ourn ouro ouu- rbbb rbbr rbmk rmon rnbr rob- robb robo robu rokk roko rokr roku romb romk romm romo ronk rono roob rook room roon roor rork roro roru roub rouk roum roun rrkm rrrr rrum rrun rubb rubu rukk rukn ruku rumb rumm rumo runk runn runo ruok ruro ruru ruun ubbo ubon ukko ukok ukon ukum ukur umb- umbo ummo umno umok umor unkn unko unmr unno unon unro unum uomo uor- uro- urok urom uroo uruk urum urun urur uuno uuuu