bbbb bbbs bbhs bffs bfhs bfsi bfsr bhff bhhs bhir bhsf bhur bhuu bibb bibi bibs biff bifi bihi bihs bihu biis birb biri birr birs biru bis- bish biss bisu brfu brhs brih bris brrr brrs brsb brsr bruh brus bsff bsfs bshs bubb bubi bubs bubu buff bufr buhi buhr buhs buif buir buis buiu bur- burb burh buri burr burs buru bush busi buss busu buus fbhs fbis fbrs fbus ffff ffhs ffii ffrr ffss fhfs fhhs fhrs fhss fibs fiff fifi fiii firs fish fisi fiss fisu frhs frib fris frsb frub fsfi fshb fshs fssf fubb fubs fubu fuff fufu fuhs fuir fur- furi furr furs fusi fuss fusu h-ii hbbs hbhs hbrs hbss hfhs hfrs hfss hhhh hhhs hhus hibi hibu hiff hifh hifi hifr hihi hiis hiiu hirf hiri hirs hiru hisb hish hiss hrhs hrib hsfs hshs hsur hubb hubi hubs huff hufs hufu huhi huhs huhu huib huif huir huis huri hurr hurs huru hush husi huss huub huus ibfi ibis ibri ibsf ibss ibus ifbb ifis ifrb ifrf ifri ifsb ihis ihss ihub iiii iiis iirs iisi iisr iisu irfu irhs iri- iris irri irrs irsf irus ishi ishr ishs isis isri issf issh issi issr isss issu isuh isus iuiu iuss rbbb rbbr rbbs rbhs rbis rbss rfhs rhfs rhhs rhib rhus rib- ribs ribu riff rifs rifu rihs riif riis riri rirs rish risi riss risu rius rrhs rrif rrrr rsbi rshs rsis rubb rubi rubs rubu ruff ruhh ruhi ruhr ruhs ruif ruis ruri rurs ruru rush rusi russ rusu s-ib s-ii sbbs sbhs sbsi sbus sfhs sfss sfsu shbs shhh shhs shib shih shii shir shis shiu shri shrs shub shuf shui shur shus shuu sibi sibs sibu siff sifr sifu sihi sihr sihs sihu sirf siri sirr sirs siru sish sisi siss sisu siui sius srfi srhs srib sris srub ssbr sshs ssis ssri ssrs sssb sssf sssh sssi ssss sub- subb subh subi subs suf- suff sufi sufr sufs sufu suhb suhi suhr suir suis sur- surf suri surr surs suru sus- susi suss susu suus ubbi ubii ubir ubis uhrs uhss uhuh uirr urbi urbs urff urfi urib urif uris uriu urrh urri ursi urss ursu urur urus usbr usbs usfi usfs ushi ushr ushs ushu usif usis ussb ussf ussr usss ussu usui usus uuri uusi uuuu