bbbb bbbs bbhs bhhs bhir bhur bhuu bibb bibi bibs bihi bihs bihu biis birb biri birr birs biru bis- bish biss bisu brhs brih bris brrr brrs brsb brsr bruh brus bshs bubb bubi bubs bubu buhi buhr buhs buir buis buiu bur- burb burh buri burr burs buru bush busi buss busu buus h-ii hbbs hbhs hbrs hbss hhhh hhhs hhus hibi hibu hihi hiis hiiu hiri hirs hiru hisb hish hiss hrhs hrib hshs hsur hubb hubi hubs huhi huhs huhu huib huir huis huri hurr hurs huru hush husi huss huub huus ibis ibri ibss ibus ihis ihss ihub iiii iiis iirs iisi iisr iisu irhs iri- iris irri irrs irus ishi ishr ishs isis isri issh issi issr isss issu isuh isus iuiu iuss rbbb rbbr rbbs rbhs rbis rbss rhhs rhib rhus rib- ribs ribu rihs riis riri rirs rish risi riss risu rius rrhs rrrr rsbi rshs rsis rubb rubi rubs rubu ruhh ruhi ruhr ruhs ruis ruri rurs ruru rush rusi russ rusu s-ib s-ii sbbs sbhs sbsi sbus shbs shhh shhs shib shih shii shir shis shiu shri shrs shub shui shur shus shuu sibi sibs sibu sihi sihr sihs sihu siri sirr sirs siru sish sisi siss sisu siui sius srhs srib sris srub ssbr sshs ssis ssri ssrs sssb sssh sssi ssss sub- subb subh subi subs suhb suhi suhr suir suis sur- suri surr surs suru sus- susi suss susu suus ubbi ubii ubir ubis uhrs uhss uhuh uirr urbi urbs urib uris uriu urrh urri ursi urss ursu urur urus usbr usbs ushi ushr ushs ushu usis ussb ussr usss ussu usui usus uuri uusi uuuu