bbbb bbbs bbhs bboy bbyo bffs bfhs bfsi bhff bhhs bhoi bhoy bhsf bibb bibi bibo bibs biff bifi bihi bihs biis bio- bioi bios bis- bish biso biss bisy biys bobb bobi bobo bobs boby boff bofh bofs boho bohs bohy boi- boii bois boob boof booh boos bosh bosi boso boss boyf boyi boyo boys bsff bsfs bshs bsos byob byoi byos bysb bysi byso byss bysy fbhs fbis ffff ffhs ffii ffss fhfs fhhs fhss fibs fiff fifi fifo fiii fios fish fisi fiss fobs fofo fohs fois foof foos fosb fosh fosi foso foss foys fsfi fsfo fshb fshs fssf fyfi h-ii hbbs hbhs hbio hbos hbss hfhs hfss hhhh hhhs hhof hibi hiff hifh hifi hifo hihi hiho hiis hiob hisb hish hiss hiyo hobo hobs hoby hoff hofs hoho hoif hois hoof hoos hosh hoss hoyi hoys hsfs hshs hsob hybo hyo- i-by ibfi ibis ibos ibsf ibss ibyi ifbb ifby iffy ifis ifsb ifso ifyo ihis ihob ihss iiii iiio iiis iioi iioo iios iisi iobi ioby ioii ioio ioof iooi iooo ioos ioso ishi ishs isis iso- isof isos issf issh issi isso isss issy isys iyos iysh obbo obby obhs obis oboi obos oboy obss off- offh offo offs offy ohhi ohho ohhs ohif ohio ohis ohob ohoh ohos ohso ohss ohyo oiii oios oobi ooby ooff oofs oofy ooho oohs oooh oooo ooos oosi osby oshi osho oshs osii osis osoi osoo osos ossb ossi osso ossy oyss s-ib s-ii s-os sbbs sbhs sbsi sfhs sfio sfos sfss shbs shhh shhs shib shih shii shio shis shof shoo shos sibi sibo sibs siby siff sifo sify sihi sihs sios sish sisi siss sisy siyi sobo sobs sofi sofo sohh soho sohs soif sois soof soos sooy sosh sosi soso soss soyo soys ssby sshs ssis sssb sssf sssh sssi ssss sybo syff syfy syis syso syss ybbs yhis yiff yiss yobi yobo yobs yoff yoho yoof yosh yosi yoso yoyo ysby ysii yssh ysyb yyff yyyy