bbbb bbbs bbci bbdd bbin bbrc bcbc bcbs bccc bcci bccs bcds bcis bcnu bcrs bcru bcsc bcsn bcss bcuc bd-r bdbc bddc bdii bdin bdsd bibb bibi bibs bicc bici bics bidi bidr bids bidu biin biis bin- binc bind bini binn bins binu birb bird biri birn birr birs biru bis- bisc bisd biss bisu bnib bnin bnrr bnss brcb brds bric brid brin bris brns brrr brrs brsb brsr bruc brud brun brus bsbd bsci bscs bsic bsin bsnd bsns bsrd bssc bssd bubb bubi bubs bubu bucc buci bucs bucu budb budd budi buds budu buic buid buin buir buis buiu bunb bund buni bunn buns bunu bur- burb burd buri burn burr burs buru busc busi buss busu buus c-cd cbbc cbbs cbcc cbcn cbcr cbcs cbcu cbdb cbdc cbdi cbdn cbds cbid cbir cbnd cbrd cbrn cbsc cbsi cbsn cbus ccbc ccbn cccb cccc ccci cccs cccu ccdc ccdi ccdn ccdr ccds ccic ccid ccii ccir ccis ccnb ccnc ccni ccnr ccns ccnu ccrc ccri ccrs ccsd ccsi ccsn ccss ccuc ccus cd-r cdcs cddb cddr cdic cdii cdis cdnb cdnc cdrs cdss cibc cibi cicc cici cicr cics cicu cidc cidi cidr cids ciid ciii ciis cin- cinc cind cini cirb circ ciri cirr cirs cis- cisc cisd cisn cisr ciss ciuc cius cnbc cnci cndd cnib cnic cnid cnrc cnrr cnss crbc crbu crcc crcr crdc crib cric crin cris criu crns crss crub crud crun crus cscb cscc cscd csci cscr cscs csdb csdn csdr csib csid csir csis csrc csrd csrs cssd cssr csur csus cub- cubb cubi cubs cucc cuci cucn cudi cuds cui- cuin cuir cuis cund curb curd curi curn curr curs cusb cusd cuss cusu dbcc dbcs dbrn dbrs dbss dbus dcbc dccb dccc dcci dccs dccu dcdb dcds dcii dcis dcns dcsc dcss dddd ddrc ddss ddub dibb dibs dici didi dids didu diii diis din- dinc dini dinn dins dinu dird dirr dirs dis- disc disd disi diss dius dncs dnic dnis dnrc dnsc dnus drbc drib dric drin drrs drub drui drus druu dsbc dscc dscn dscr dscs dsdr dsrc dsri dsrr dssc dssi dssn dub- dubb dubc dubs dubu ducs dudd duds dudu duid duin duir duis dunc dunn duns duri durn duru dusi duur ibcs ibid ibis ibns ibrc ibrd ibri ibsn ibss ibus icbc icbd icbs iccb iccc icci iccn iccr iccs iccu icdc icdd icis icnb icnc icns icrc icrr icrs icru icsb icsc icsd icsi icsr icss icub icus idcr idic idid idin idir idis idrc idsc idss idub idun idus iicd iiii iiis iirc iirs iisc iisd iisi iisr iisu iiuc inbd incb incd inci incr incs ind- indc indi inds indu inid inis inni innr inns innu inri inrs insc inss insu inui inun inus ircc ircd ircs ircu irdc irds iri- iric irid irin iris irrc irri irrs irun irus isbd isbn iscc iscd isci iscn iscr iscs iscu isdb isdc isdn isds isic isin isis isri issc issi issr isss issu isus iucc iuds iuiu iusd iuss n-ii nbbc nbcc nbci nbcs nbic ncbc ncbi ncbs nccc ncci nccn nccr nccs nccu ncdc ncdn ncdr ncds ncdu ncid ncis ncnc ncnd ncrc ncri ncsc ncsi ncss ndcc ndcs nddb ndic ndrc ndri ndsi ndss nibi nibs nicc nicd nici nics nicu nidd nidi nids niir niiu nind nini nins nirs niru nisd nisi niss nisu niur nndb nnnn nnss nrcs nrdc nrds nric nrrc nrrd nrsc nscc nscd nscs nsds nsic nsin nsis nsnr nsrc nsrd nssb nssc nssr nsss nsub nubc nubi nubs nuci nucs nucu nudc nudd nudi nuin nunc nunn nuns nurc nurd nuri nurn nurr nurs nuru nusi nuss nusu rbbb rbbr rbbs rbds rbis rbsd rbss rcbc rccb rccc rccs rcdc rcds rcic rcid rcis rcnr rcrd rcsc rcsd rcsi rcss rib- ribs ribu ricc rics ridc ridd ridi rids riin riis rind rinn riri rirs risc risd risi riss risu rius rnbr rncs rndc rnds rnin rrrr rrun rsbi rscc rscn rscs rsdd rsds rsid rsis rsnn rsnr rubb rubi rubs rubu ruci rudd rudi ruds ruid ruin ruis runc rund runi runn runs rurc rurd ruri rurs ruru rusi russ rusu ruud ruun s-ib s-ic s-ii sbbs sbcc sbcs sbds sbic sbsd sbsi sbus scbi sccc sccs scdc scds sci- scic scid scin scir scis scnd scnr scr- scrc scri scrn scrs scsc scsd scsi scsn scsr scsu scub scud scun scur sdcc sddc sdds sdib sdic sdrc sdrs sdsc sdss sdsu sibc sibi sibs sibu sicc sici sics sicu sidd sidi sidr sids sind sini sinn sins sinu sirc siri sirr sirs siru sisc sisd sisi siss sisu siui sius sncc snib snid snir snns snrs snsd snub snur snus srbc srcc srib sris srni srnn srsd srub ssbn ssbr sscc ssci sscs ssdc ssdd ssid ssin ssis ssns ssrc ssri ssrs sssb sssc sssi ssss sub- subb subd subi subs suc- succ suci sucr sucs sudd sudi suds suid suin suir suis sun- sunb sund suni sunn suns sunu sur- surc surd suri surn surr surs suru sus- susd susi suss susu suus ubbi ubic ubid ubii ubir ubis ubud ucbc ucci ucdc ucdd ucin ucrc ucsb ucsc ucsd ucsu udbc uddi udds udic udid udin udir udsd udun uirr uisd unbd uncc unci uncs undi unds uni- unic unii unin unir unis unni unns unrs uns- unsc unus urbi urbs urci urds urdu urib uric urin uris uriu urni urns urri ursi urss ursu urun urur urus usbc usbr usbs uscc uscs usdc usds usin usis usnc usnr usnu ussb ussc ussr usss ussu usui usun usus uuni uuri uusi uuuu