bbbb bbbs bbhs bbpr bhhs bhir bhur bhuu bibb bibi bibs bihi bihs bihu biis bipp bips bipu birb biri birr birs biru bis- bish bisp biss bisu bphs bpsu brhs brih bris brrr brrs brsb brsr bruh brup brus bshs bspp bspr bsup bubb bubi bubs bubu buhi buhr buhs buir buis buiu bups bur- burb burh buri burp burr burs buru bush busi buss busu buus h-ii hbbs hbhs hbrs hbss hhhh hhhs hhip hhus hibi hibu hihi hiis hiiu hipp hips hiri hirs hiru hisb hish hiss hphs hpps hpss hrhs hrib hrip hrpp hrps hshs hsps hssp hsur hubb hubi hubs huhi huhs huhu huib huir huis hupp hups huri hurr hurs huru hush husi huss huub huus ibis ibri ibss ibus ihis ihss ihub iiii iiis iirs iisi iisp iisr iisu iphr ippr ipri ipsi ipsp ipss ipur ipus irbp irhs iri- irip iris irps irri irrs irsp irus ishi ishr ishs isis ispr isps isri isrp issh issi issp issr isss issu isuh isup isus iuiu iupp iuss pbhs pbrs pbsp phbs phhs phi- phip phis phrr phrs pibb pibi piip pipi pipp pips piri pirr pirs piru pish pisi piss pisu pius pphi pphs ppib ppih pppp ppps ppru ppsh ppss ppur prbs prhs pri- prii pris prps prri prrs prsi prss prus pruu psbr pshs psip psis psph pspi pspp pspr psps psrp pubs pubu puhi puir puis puiu pupi pups pupu pur- purb puri purp purr purs puru push pusi puss rbbb rbbr rbbs rbhs rbis rbsp rbss rhhs rhib rhus rib- ribs ribu rihs riis ripi ripp ripr rips riri rirs rish risi risp riss risu rius rphs rpii rpps rrhs rrrr rrsp rsbi rshs rsis rspb rsps rubb rubi rubp rubs rubu ruhh ruhi ruhr ruhs ruis rupp ruri rurp rurs ruru rush rusi russ rusu s-ib s-ii sbbs sbhs sbsi sbsp sbus shbs shhh shhs shib shih shii ship shir shis shiu shps shri shrp shrs shub shui shup shur shus shuu sibi sibs sibu sihi sihr sihs sihu sipi sipp sips siri sirp sirr sirs siru sish sisi siss sisu siui sius sphr sphs spib spip spir spis spps spri sprs spsp spss spui spur spus srhs srib sris srps srsp srub ssbr sshs ssis ssps ssri ssrs sssb sssh sssi ssss sub- subb subh subi subs suhb suhi suhr suir suis sup- suph supp supr sups sur- suri surp surr surs suru sus- susi susp suss susu suus u-rp ubbi ubii ubir ubis uhrs uhss uhuh uhup uipi uirr upis uppp uppu upri upsi upup urbi urbs urib uris uriu urrh urri ursi urss ursu urup urur urus usbr usbs ushi ushr ushs ushu usip usis uspp usps ussb ussr usss ussu usui usus uuri uusi uuuu