bbbb bbbs bbhs bhhs bhir bhoi bhor bibb bibi bibo bibs bihi bihs biis bio- bioi bios birb biri biro birr birs bis- bish biso biss bobb bobi bobo bobs boho bohr bohs boi- boii bois boob booh boor boos bor- borh bori boro borr bors bosh bosi boso boss brhs brih brio bris brob broh broo bror bros brrr brrs brsb brsr bshs bsos h-ii hbbs hbhs hbio hbos hbrs hbss hhhh hhhs hibi hihi hiho hiis hiob hiri hiro hirs hisb hish hiss hobo hobs hoho hoir hois hoor hoos hori horo horr hors hosh hoss hrhs hrib hrob hros hrso hshs hsob ibis ibos ibri ibro ibss ihis ihob ihss iiii iiio iiis iioi iioo iios iirs iisi iisr iobi ioii ioio iooi iooo ioos iori iors ioso irhs iri- irio iris irob iroh irri irrs ishi ishr ishs isis iso- isor isos isri issh issi isso issr isss obbo obhs obis oboi obor obos obrh obri obro obsr obss ohhi ohho ohhs ohio ohis ohob ohoh ohos ohso ohss oiii oios oobi ooho oohs oooh oooo ooos oosi orbb orbi orbo orbs orhs ori- orio oris oro- oror oros orri orro orrs orsi orso oshi osho oshs osii osis osoi osoo osor osos osro ossb ossi osso rbbb rbbr rbbs rbhs rbis rboh rbss rhhs rhib rhio rhob rhoh rhos rib- ribo ribs riho rihs riis rios riri rirs rish risi riso riss rob- robb robi robo robs rohr rohs roio roir rois roob rooi roor roos rori roro rosh rosi roso ross rrhs rrrr rsbi rshs rsis rsos s-ib s-ii s-os sbbs sbhs sbor sbsi shbs shhh shhs shib shih shii shio shir shis shoo shor shos shri shrs sibi sibo sibs sihi sihr sihs sior sios siri siro sirr sirs sish sisi siss sobo sobr sobs sohh soho sohs soir sois soor soos sorb sorh sori soro sorr sors sosh sosi soso soss srhs srib sris sros ssbr sshs ssis ssri ssrs sssb sssh sssi ssss