bbbb bhor bnor bnrr bobb bobo bohn boho bohr bokn boko bonk bonn bono boob booh book boon boor bor- borh bork born boro borr brkb brno brob broh brok bron broo bror brrr hhhh hobo hohn hoho hoko honk hono hook hoon hoor hork horn horo horr hrob hron kbbb kbbk kbbo kbbr kbhb kbhh kbhn kbhr kbkb kbkk kbko kbkr kbnh kbnn kbno kbnr kbob kbok kbon kboo kbrb kbrh kbrk kbrn kbro khbr khhk khho khkk khkn khkr khnk khnr khob khok khon khor khrk khro khrr kkbb kkbn kkbo kkbr kkhb kkhh kkhk kkhr kkkk kknb kknn kkno kkob kkoh kkon kkoo kkor kkrb kkrh kkrk kkrn kkro kkrr knbb knbn knbr knhk knkk knnb knnk knnr knob knok knon knor knrb knrk knro kobb kobk kobn kobo kobr kohh kohn koho kohr kokb kokh kokk kokn koko kokr konk kono koob kook koon kooo koor korb kork korn koro korr krbb krbk krbr krkh krkk krkn krko krkr krnb krnh krnk krnn krno krob kroh krok kroo kror krrb krrk krrn krro krrr nbbo nhnn nhon nkok nkor nnnn nobo nohn noho noko non- nonn nono noo- noob nook noon nooo noor nor- norb nork norn noro norr nron obbo obkb obok obon obor obrh obro ohho ohno ohob ohoh ohok ohrn okko okno okok okon okor okro onno onon onor ooho oooh oooo orbb orbo orko orno oro- orok oron oror orro rbbb rbbr rboh rhob rhoh rhon rnbr rob- robb robo rohn rohr rokh rokk roko rokr ronk rono roob rook roon roor rork roro rrrr