-hou bbbb bhuu bobb bobo bobu bohn boho bohu bokn boko boku bonk bonn bono bonu boob booh book boon bouh bouk boun bubb bubo bubu buho bukh bukk buko buku bunb bunk bunn buno bunu buon hhhh hkbu hobo hohn hoho hoko hoku honk hono honu hook hoon houk hubb hubo huhn huhu hunh hunk huon huub kbbb kbbk kbbo kbbu kbhb kbhh kbhn kbkb kbkk kbko kbnh kbnn kbno kbnu kbob kbok kbon kboo kbub kbuk kbun kbuu khhk khho khkk khkn khnk khnu khob khok khon khou khub khuk khun kkbb kkbn kkbo kkhb kkhh kkhk kkkk kknb kknn kkno kknu kkob kkoh kkon kkoo kkuu knbb knbn knbu knhk knkk knnb knnk knob knok knon knou knub knuk kobb kobk kobn kobo kobu kohh kohn koho kohu kokb kokh kokk kokn koko koku konk kono koob kook koon kooo koou koub kouu kubb kubo kubu kuhn kuhu kukh kukk kukn kuku kunk kuno kunu kuok kuon kuoo kuub kuuk kuuu nbbo nhnn nhon nkok nnnn nobo nobu nohn noho noko non- nonn nono nonu noo- noob nook noon nooo nouh noun nubk nuku nunk nunn nuno nuon nuuk obbo obkb obok obon obuh ohho ohno ohob ohoh ohok okko okno okok okon okun onno onon ooho ooku oooh oooo oun- ouu- ubbo ubon uhno uhoh uhok uhuh ukko ukok ukon unkn unko unno unon uuno uuuu