bbbb bbin bibb bibi bibo biin bin- bini binn bino binu bio- bioi bion biou bivi bnib bnin bobb bobi bobo bobu boi- boii boin boiu boni bonn bono bonu boob boon boun bovi bovo bubb bubi bubo bubu buin buiu bunb buni bunn buno bunu buon i-no ibon iiii iiio iino iioi iioo inbo inni inno innu ino- inoi inon inou inui inun iobi ioii ioio ioni ionn iono iooi iooo ioun iuiu iuno ivbv ivin ivon n-ii nbbo nibi nibo niiu nini nino nion nioo niou nivo nnnn nobi nobo nobu noib noin noio non- noni nonn nono nonu noo- noob noon nooo noov noun nov- novi novo nubi nuin nunn nuno nuon nuvo obbo obin oboi obon obvi oiii oion onni onno onon oobi oooo ouii ouin oun- ouu- ovi- ovni ovo- ovon ovoo ubbi ubbo ubii ubon uni- unii unin unio univ unni unno unon unov uovo uuni uuno uuuu uv-b uvvu viii vini vino vinu vion vivi vivo voin voio voni vonn voun vuno vvob vvvv