bbbb bbbs bbhs bboy bbyo bhhs bhoi bhoy bibb bibi bibo bibs bihi bihs biis bio- bioi bios bis- bish biso biss bisy biys bobb bobi bobo bobs boby boho bohs bohy boi- boii bois boob booh boos bosh bosi boso boss boyi boyo boys bshs bsos byob byoi byos bysb bysi byso byss bysy h-ii hbbs hbhs hbio hbos hbss hhhh hhhs hibi hihi hiho hiis hiob hisb hish hiss hiyo hobo hobs hoby hoho hois hoos hosh hoss hoyi hoys hshs hsob hybo hyo- i-by ibis ibos ibss ibyi ihis ihob ihss iiii iiio iiis iioi iioo iios iisi iobi ioby ioii ioio iooi iooo ioos ioso ishi ishs isis iso- isos issh issi isso isss issy isys iyos iysh obbo obby obhs obis oboi obos oboy obss ohhi ohho ohhs ohio ohis ohob ohoh ohos ohso ohss ohyo oiii oios oobi ooby 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 shbs shhh shhs shib shih shii shio shis shoo shos sibi sibo sibs siby sihi sihs sios sish sisi siss sisy siyi sobo sobs sohh soho sohs sois soos sooy sosh sosi soso soss soyo soys ssby sshs ssis sssb sssh sssi ssss sybo syis syso syss ybbs yhis yiss yobi yobo yobs yoho yosh yosi yoso yoyo ysby ysii yssh ysyb yyyy