bbbb bbbs bbci bbeb bbrc bcbc bcbs bccc bcci bccs bcec bcer bces bcie bcis bcrs bcru bcsc bcss bcuc bebb bebe bebi beci beck becs becu beeb beek beer bees beic beik beir beis beke beki beks berc bere beri berk berr bers beru bes- bese besk bess beuk beur bibb bibe bibi bibs bicc bice bici bick bics bieb bier bies bieu biis bike biku birb bire biri birk birr birs biru bis- bisc bise bisk biss bisu brcb brce breb brec bree brei brek brer bres bric brie brik bris brkb brrr brrs brsb brsr bruc brue brus bsci bscs bseb bsec bsee bser bses bsic bssc bsse bubb bube bubi bubs bubu bucc buce buci buck bucs bucu buer bueu buic buie buik buir buis buiu buke buki bukk buku bur- burb bure buri burk burr burs buru busc buse busi busk buss busu buus cbbc cbbs cbcc cbce cbcr cbcs cbcu cbec cbee cber cbir cbkr cbre cbsc cbse cbsi cbus ccbc cccb cccc ccci cccs cccu ccee ccic ccii ccir ccis ccrc ccre ccri ccrs ccsi ccss ccuc ccus cebs cebu cec- cece ceci cecs ceeb ceec cees ceke cer- cerc cere ceri cers cesc cese cesi cesr cess ceui cibc cibe cibi cicc cici cicr cics cicu ciee cier cies ciii ciis cikr cirb circ cire ciri cirk cirr cirs cis- cisc cise cisk cisr ciss ciuc cius ckbc ckbe ckbi ckck ckcs cker ckrc cksb crbc crbu crcc crce crcr cre- creb crec cree crei cres creu crib cric crie crik cris criu crkc crss crub crue cruk crus cscb cscc csce csci cscr cscs csec csee cser csib csik csir csis csks csrc csrs csse cssr csur csus cub- cubb cube cubi cubs cucc cuce cuci cuck cuek cuer cues cui- cuir cuis cuk- cuke curb cure curi curr curs cusb cusk cuss cusu ebbc ebbr ebbs ebcc eber ebes ebic ebis ebru ebur ebus ecbc ecbe eccb eccc ecce ecci eces ecib ecis ecks ecrc ecri ecrr ecru ecsc ecse ecss ecsu ecus eecs eeee eees eeke eeks eerc eers eese eesi eesk eick eics eiec eiei eier eies eike eiki eiks eire eirs eise eisk eiss ekeb ekek eker ekes ekis ekki eksi ekur erbb erbe ercc erce ereb erec erei erer eres eric erie erik eris eriu erke erki erks errc erre errs erse ersi erub eruc erur erus esbs escb esce esci escr escs escu esee esek eser eses esie esik esis eske esks esku esri esse essi essu esui esus eubc eubi euer eur- eurc eure euse i-be ibcs ibec ibes ibie ibis ibrc ibri ibss ibus icbc icbs iccb iccc icci iccr iccs iccu icec icee icer ices icis icke icks icrc icre icrr icrs icru icsb icsc icse icsi icsr icss icub icue icus iecc ieie iere ieri iers iesc iesi iesr iesu iies iiie iiii iiis iirc iirs iisc iisi iisr iisu iiuc ikee iker ikes ikki ikri iksu ikue irbe ircc ircs ircu iree irer ires iri- iric irie iris irki irks irrc irre irri irrs irse irus isbe iscc isci iscr iscs iscu iseb isec isee iser ises isic isie isis isku isri issc isse issi issr isss issu isus iucc iuce iuiu iuse iuss k-ci kbbb kbbc kbbe kbbi kbbk kbbr kbbs kbbu kbcb kbce kbci kbck kbcr kbcs kbcu kbeb kbec kbee kbek kber kbes kbib kbic kbie kbik kbis kbiu kbkb kbkk kbkr kbrb kbrc kbre kbri kbrk kbru kbsb kbsi kbsk kbsr kbss kbsu kbub kbuc kbue kbuk kbur kbus kbuu kcbc kcbi kcbk kcbr kcbs kcbu kccb kccc kcci kcck kccr kccu kceb kcec kcee kcei kceu kcic kcie kcii kcir kcis kciu kckc kckk kckr kcrc kcri kcrr kcrs kcru kcsb kcsc kcse kcsi kcsr kcss kcsu kcub kcue kcui kcuk kebb kebc kebe kebi kebr kebu keck kecr keek keer kees keib keii keik keir keis kekb kekc keke keki keks keku ker- kerb kerc kere keri kerk kerr kers keru kesb kesc kesi kesk kesr kess keur keus kibb kibc kibe kibi kibr kibs kibu kicb kicc kice kick kicr kics kier kies kieu kiic kiii kiik kiis kiiu kikc kiki kikk kikr kiku kirb kirc kiri kirk kirr kirs kiru kisc kise kisi kisk kisr kiss kisu kiur kiuu kkbb kkbe kkbi kkbr kkbs kkcb kkci kkck kkcr kkcs kkic kkik kkkk kkrb kkrc kkre kkrk kkrr kkrs kkse kksi kksr kkss kksu kkus kkuu krbb krbe krbi krbk krbr krcb krcc krce krci krcs krcu kreb krec kree krei krek kres kreu krib krik kris krkc krke krki krkk krkr krks krku krrb krrc krre krri krrk krrr krrs krsc krse krsk krsr krss krsu kruc krue krui kruk krur ksbc ksbi ksbr ksbs kscb ksce ksci ksck kscr kscs kscu ksec ksee ksei ksek kser ksib ksii ksik ksir ksis kskb kske kskk kskr ksks ksku ksrb ksrr ksrs ksse kssi kssr ksss kssu ksub ksue ksui ksuu kubb kubc kube kubr kubs kubu kucb kucc kuce kuci kucr kuei kuek kues kueu kuic kuie kuik kuke kuki kukk kuks kuku kurb kure kuri kurk kurr kurs kuru kusb kusc kusu kuub kuuk kuur kuuu rbbb rbbr rbbs rbis rbss rcbc rccb rccc rccs rcic rcis rcsc rcsi rcss rebb rebe rebk rebs rebu recc rece reci reck recr recs recu reeb reek rees reii reik reir reis reiu reke reki reks rere reri rers reru rese resi ress reue reuk reus reuu rib- ribe ribs ribu ricc rice rick rics riek rier ries rieu riis rike riki rikk riku rire riri rirs risc rise risi risk riss risu riue rius rkss rrrr rsbi rscc rscs rsee rsis rsre rubb rube rubi rubs rubu ruce ruci ruck ruer rues ruis ruke ruki rukk ruku rurc rure ruri rurs ruru ruse rusi rusk russ rusu s-ib s-ic s-ii sbbs sbcc sbcs sber sbic sbrk sbse sbsi sbus scbi sccc scce sccs scec scee scer sci- scic scie scir scis sck- scr-