bbbb bbbs bbdd bbin bd-r bdii bdin bdsd bibb bibi bibs bidi bidr bids bidu biin biis bin- bind bini binn bins binu birb bird biri birn birr birs biru bis- bisd biss bisu bnib bnin bnrr bnss brds brid brin bris brns brrr brrs brsb brsr brud brun brus bsbd bsin bsnd bsns bsrd bssd bubb bubi bubs bubu budb budd budi buds budu buid buin buir buis buiu bunb bund buni bunn buns bunu bur- burb burd buri burn burr burs buru busi buss busu buus dbrn dbrs dbss dbus dddd ddss ddub dibb dibs didi dids didu diii diis din- dini dinn dins dinu dird dirr dirs dis- disd disi diss dius dnis dnus drib drin drrs drub drui drus druu dsdr dsri dsrr dssi dssn dub- dubb dubs dubu dudd duds dudu duid duin duir duis dunn duns duri durn duru dusi duur ibid ibis ibns ibrd ibri ibsn ibss ibus idid idin idir idis idss idub idun idus iiii iiis iirs iisd iisi iisr iisu inbd ind- indi inds indu inid inis inni innr inns innu inri inrs inss insu inui inun inus irds iri- irid irin iris irri irrs irun irus isbd isbn isdb isdn isds isin isis isri issi issr isss issu isus iuds iuiu iusd iuss n-ii nddb ndri ndsi ndss nibi nibs nidd nidi nids niir niiu nind nini nins nirs niru nisd nisi niss nisu niur nndb nnnn nnss nrds nrrd nsds nsin nsis nsnr nsrd nssb nssr nsss nsub nubi nubs nudd nudi nuin nunn nuns nurd nuri nurn nurr nurs nuru nusi nuss nusu rbbb rbbr rbbs rbds rbis rbsd rbss rib- ribs ribu ridd ridi rids riin riis rind rinn riri rirs risd risi riss risu rius rnbr rnds rnin rrrr rrun rsbi rsdd rsds rsid rsis rsnn rsnr rubb rubi rubs rubu rudd rudi ruds ruid ruin ruis rund runi runn runs rurd ruri rurs ruru rusi russ rusu ruud ruun s-ib s-ii sbbs sbds sbsd sbsi sbus sdds sdib sdrs sdss sdsu sibi sibs sibu sidd sidi sidr sids sind sini sinn sins sinu siri sirr sirs siru sisd sisi siss sisu siui sius snib snid snir snns snrs snsd snub snur snus srib sris srni srnn srsd srub ssbn ssbr ssdd ssid ssin ssis ssns ssri ssrs sssb sssi ssss sub- subb subd subi subs sudd sudi suds suid suin suir suis sun- sunb sund suni sunn suns sunu sur- surd suri surn surr surs suru sus- susd susi suss susu suus ubbi ubid ubii ubir ubis ubud uddi udds udid udin udir udsd udun uirr uisd unbd undi unds uni- unii unin unir unis unni unns unrs uns- unus urbi urbs urds urdu urib urin uris uriu urni urns urri ursi urss ursu urun urur urus usbr usbs usds usin usis usnr usnu ussb ussr usss ussu usui usun usus uuni uuri uusi uuuu