bbbb bbbs bbci bbeb bbpr bbrc bcbc bcbp bcbs bccc bcci bccs bcec bcer bces bcie bcis bcpp bcps bcrs bcru bcsc bcss bcuc bcup bebb bebe bebi beci becs becu beeb beep beer bees beic beir beis berc bere beri berr bers beru bes- bese bess beur bibb bibe bibi bibs bicc bice bici bics bieb bier bies bieu biis bipp bips bipu birb bire biri birr birs biru bis- bisc bise bisp biss bisu bpcp bprc bpsu brcb brce breb brec bree brei brep brer bres bric brie bris brrr brrs brsb brsr bruc brue brup brus bsci bscp bscs bseb bsec bsee bser bses bsic bspp bspr bssc bsse bsup bubb bube bubi bubs bubu bucc buce buci bucs bucu buer bueu buic buie buir buis buiu bupc bups bur- burb bure buri burp burr burs buru busc buse busi buss busu buus cbbc cbbs cbcc cbce cbcp cbcr cbcs cbcu cbec cbee cber cbir cbpc cbpp cbre cbsc cbse cbsi cbus ccbc cccb cccc ccci cccp cccs cccu ccee ccic ccii ccip ccir ccis ccpe ccpp ccpr ccps ccrc ccre ccri ccrp ccrs ccsi ccsp ccss ccuc ccup ccus cebp cebs cebu cec- cece ceci cecp cecs ceeb ceec cees ceip cepc cepe cepp cepr ceps cer- cerc cere ceri cerp cers cesc cese cesi cesp cesr cess ceui cibc cibe cibi cicc cici cicr cics cicu ciee cier cies ciii ciis cipp cips cirb circ cire ciri cirr cirs cis- cisc cise cisp cisr ciss ciuc ciup cius cpbc cpce cpcs cpcu cpeb cpep cper cpic cpps cpre cpri cprs cpsc cpsr cpsu cpus crbc crbu crcc crce crcr cre- creb crec cree crei crep cres creu crib cric crie crip cris criu crpc crps crsp crss crub crue crup crus cscb cscc csce csci cscr cscs csec csee csep cser csib csir csis cspb cspc cspe cspi csps csrc csrs csse cssr csup csur csus cub- cubb cube cubi cubs cucc cuce cuci cuer cues cui- cuir cuis cupe cupp cupr cups curb cure curi curr curs cusb cusp cuss cusu ebbc ebbr ebbs ebcc eber ebes ebic ebis ebru ebur ebus ecbc ecbe eccb eccc ecce ecci eces ecib ecip ecis ecpp ecrc ecri ecrr ecru ecsc ecse ecsp ecss ecsu ecus eecs eeee eees eeps eerc eers eese eesi eics eiec eiei eier eies eipr eire eirs eise eiss epcc epci epec epee eper epes epi- epic epie epip epis eppc eppp epps eprb eprp eprs epsc epsi epsp epss epub epus erbb erbe ercc erce ercp ereb erec erei erer eres eric erie eris eriu erpe erps errc erre errs erse ersi erub eruc erur erus esbs escb esce esci escr escs escu esee eser eses esie esis espc espe espi espp esps esri esse essi essp essu esui esus eubc eubi euer eur- eurc eure euse i-be ibcs ibec ibes ibie ibis ibrc ibri ibss ibus icbc icbp icbs iccb iccc icci iccp iccr iccs iccu icec icee icer ices icis icpc icps icrc icre icrr icrs icru icsb icsc icse icsi icsp icsr icss icub icue icup icus iecc ieie iere ieri iers iesc iesi iesr iesu iies iiie iiii iiis iirc iirs iisc iisi iisp iisr iisu iiuc ipcc ipce ipcs ipec iper ipes ipie ippc ippr ipri ipsc ipse ipsi ipsp ipss ipur ipus irbe irbp ircc ircs ircu iree irer ires iri- iric irie irip iris irpc irpe irps irrc irre irri irrs irse irsp irus isbe iscc isci iscp iscr iscs iscu iseb isec isee isep iser ises isic isie isis ispc ispe ispr isps isri isrp issc isse issi issp issr isss issu isup isus iucc iuce iuiu iupp iuse iuss pbcc pbrs pbsp pcbc pcbs pccc pcce pccs pcep pcer pcip pcpb pcpp pcps pcrc pcre pcse pece peci pecr pecs peec peep peer pees peip peir peis pepe pepi peps per- perc pere peri perp perr pers peru pese pesi pess pesu peur pibb pibi picc pice pici picr pics picu piep pier pies piip pipe pipi pipp pips pirc pire piri pirr pirs piru pise pisi piss pisu pius ppcc ppci ppcs pper ppib ppic ppie pppp ppps pprc ppru ppss ppur prbc prbs prcc prcp prcs pre- preb prec pree prep pres preu pri- prie prii pris prps prri prrs prsc prse prsi prss prue prus pruu psbr psci pscu pseb psec psei psip psis pspi pspp pspr psps psrp pssc psse pu-e pube pubs pubu puce puer pueu puir puis puiu pupe pupi pups pupu pur- purb pure puri purp purr purs puru pusi puss puuc rbbb rbbr rbbs rbis rbsp rbss rcbc rccb rccc rccs rcep rcic rcis rcpi rcps rcsc rcsi rcss rebb rebe rebs rebu recc rece reci recp recr recs recu reeb reep rees reii reir reis reiu repe repi repp repr reps repu rere reri rers reru rese resi resp ress reue reup reus reuu rib- ribe ribs ribu ricc rice rics riep rier ries rieu riis ripe ripi ripp ripr rips rire riri rirs risc rise risi risp riss risu riue rius rpcs rpii rpps rrrr rrsp rsbi rscc rscs rsee rsis rspb rsps rsre rubb rube rubi rubp rubs rubu ruce ruci ruer rues ruis rupe rupp rurc rure ruri rurp rurs ruru ruse rusi russ rusu s-ib s-ic s-ii sbbs sbcc sbcs sber sbic sbse sbsi sbsp sbus scbi sccc scce sccp sccs scec scee scep scer sci- scic scie scip scir scis scpb scpe scpi scps scr- scrc scre scri scrs scsc scsi scsr scsu scub scup scur se-c se-e se-i se-s se-u sebe sebi sebs sec- secc sece secr secs secu seeb seec seep seer sees seeu seie seii seip seir seis seiu sepe sepi sepp sepr seps sepu serb serc sere seri serp serr sers seru sesc sese sesi sess seui seur sibc sibe sibi sibs sibu sicc sice sici sicp sics sicu siec sier sies sipc sipe sipi sipp sips sirc sire siri sirp sirr sirs siru