bbbb bhir bhoi bhor bibb bibi bibo bihi bio- bioi birb biri biro birr bizz bobb bobi bobo boho bohr boi- boii boob booh boor booz bor- borh bori boro borr borz bozi bozo brih brio briz brob broh broo bror broz brrr bzzz h-ii hbio hhhh hibi hihi hiho hiob hiri hiro hizz hobo hoho hoir hoor hori horo horr hozo hrib hrob ibri ibro ihob iiii iiio iioi iioo iobi ioii ioio iooi iooo iori iri- irio irob iroh irri izzo obbo oboi obor obrh obri obro ohhi ohho ohio ohob ohoh oiii oobi ooho oooh oooo oozi orbb orbi orbo ori- orio oro- oror oroz orri orro orzo rbbb rbbr rboh rhib rhio rhiz rhob rhoh rib- ribo riho rioz riri rizi rizz rob- robb robi robo rohr roio roir roiz roob rooi roor rooz rori roro rozi rozz rrrr z-ro zhob zhor zibo ziri ziro zizi zizz zobo zohr zoio zoo- zorb zori zoro zozo zzhz zzzz