bbbb bbbs bbeb bbet bbrc bcbc bcbs bccc bccs bcec bcer bces bcet bcrs bcru bcsc bcss bctc bcts bcuc bebb bebe beck becs becu beeb beek beer bees beet beke beks berc bere berk berr bers bert beru bes- bese besk bess best betc bete bets bett betu beuk beur brcb brce breb brec bree brek brer bres bret brkb brrr brrs brsb brsr brst brtc bruc brue brus brut bscs bseb bsec bsee bser bses bset bskt bssc bsse bsts btcc btcs btec btek btrc btrt btss bttb btus bubb bube bubs bubu bucc buce buck bucs bucu buer bueu buke bukk buku bur- burb bure burk burr burs burt buru busc buse busk buss bust busu but- bute buts butt buus cbbc cbbs cbcc cbce cbcr cbcs cbct cbcu cbec cbee cber cbet cbkr cbre cbrt cbsc cbse cbtc cbus ccbc cccb cccc cccs cccu ccee ccrc ccre ccrs ccrt ccss ccst cctb cctc cctt ccuc ccus ccut cebs cebu cec- cece cecs cect ceeb ceec cees ceke cer- cerc cere cers cert cesc cese cesr cess cest cet- cete cets ckbc ckbe ckck ckcs cker ckrc cksb ckst cktb ckts crbc crbu crcc crce crcr cre- creb crec cree cres cret creu crkc crrt crss crst crtc crts crub crue cruk crus crut cscb cscc csce cscr cscs csec csee cser cset csks csrc csrs csse cssr cstc cstr csts csur csus ctbs ctec ctrc ctrs ctsc ctss ctsu ctts cub- cubb cube cubs cucc cuce cuck cuek cuer cues cuk- cuke curb cure curr curs curt cusb cusk cuss cust cusu cut- cutc cute cuts cutt ebbc ebbr ebbs ebcc eber ebes ebru ebur ebus ecbc ecbe eccb eccc ecce ecct eces ecks ecrc ecrr ecru ecsc ecse ecss ecsu ect- ectc ects ecus eecs eeee eees eeke eeks eerc eers eese eesk eetc eete eets eetu ekeb ekek eker ekes eket ekur erbb erbe ercc erce ereb erec erer eres eret erke erks errc erre errs erse erst erts ertu erub eruc erur erus esbs escb esce escr escs escu esee esek eser eses eset eske esks esku esse esst essu estc este estr ests esus etbc etbr etcc etcs etec etee eter etes etre etsu ette ettu eubc euer eur- eurc eure eurt euse kbbb kbbc kbbe kbbk kbbr kbbs kbbt kbbu kbcb kbce kbck kbcr kbcs kbct kbcu kbeb kbec kbee kbek kber kbes kbet kbkb kbkk kbkr kbrb kbrc kbre kbrk kbrt kbru kbsb kbsk kbsr kbss kbst kbsu kbtb kbtc kbte kbtk kbtr kbts kbtt kbub kbuc kbue kbuk kbur kbus kbut kbuu kcbc kcbk kcbr kcbs kcbu kccb kccc kcck kccr kcct kccu kceb kcec kcee kcet kceu kckc kckk kckr kcrc kcrr kcrs kcrt kcru kcsb kcsc kcse kcsr kcss kcst kcsu kctb kctc kcte kctu kcub kcue kcuk kebb kebc kebe kebr kebt kebu keck kecr keek keer kees keet kekb kekc keke keks keku ker- kerb kerc kere kerk kerr kers kert keru kesb kesc kesk kesr kess kest ket- ketc kete ketk ketr kets kett ketu keur keus kkbb kkbe kkbr kkbs kkbt kkcb kkck kkcr kkcs kkct kkkk kkrb kkrc kkre kkrk kkrr kkrs kkrt kkse kksr kkss kkst kksu kktc kktk kkts kktu kkus kkut kkuu krbb krbe krbk krbr krbt krcb krcc krce krcs krcu kreb krec kree krek kres kret kreu krkc krke krkk krkr krks krku krrb krrc krre krrk krrr krrs krrt krsc krse krsk krsr krss krst krsu krtc krtk krtr krts kruc krue kruk krur ksbc ksbr ksbs kscb ksce ksck kscr kscs kscu ksec ksee ksek kser kset kskb kske kskk kskr ksks ksku ksrb ksrr ksrs ksrt ksse kssr ksss ksst kssu kstb kstc kste kstk kstr ksts kstt kstu ksub ksue ksut ksuu ktbb ktbc ktbr ktbt ktbu ktcc ktce ktck ktcr ktcs ktec ktee ktek ktkb ktkc ktke ktkk ktkr ktks ktkt ktku ktrb ktrc ktre ktrk ktrr ktrs ktrt ktru ktsc ktsr ktst ktsu kttc kttk kttr ktts kttt kttu ktub ktuc kubb kubc kube kubr kubs kubu kucb kucc kuce kucr kuek kues kueu kuke kukk kuks kuku kurb kure kurk kurr kurs kurt kuru kusb kusc kust kusu kute kutr kuts kutt kutu kuub kuuk kuur kuuu rbbb rbbr rbbs rbss rbst rcbc rccb rccc rccs rcet rcsc rcss rctc rcts rebb rebe rebk rebs rebu recc rece reck recr recs rect recu reeb reek rees reet reke reks rekt rere rers rert reru rese ress rest rete retr rets rett reue reuk reus reut reuu rkss rkts rrrr rscc rscs rsee rsre rsts rstu rtcc rtce rtee rtes rtss rtts rubb rube rubs rubu ruce ruck ruct ruer rues ruet ruke rukk ruku rurc rure rurs ruru ruse rusk russ rust rusu rute ruts rutt rutu sbbs sbcc sbcs sbct sber sbrk sbse sbst sbtc sbtk sbus sccc scce sccs scct scec scee scer scet sck- scr- scrc scre scrs scsc scsr scst scsu sctc sctr scts scub scur scut se-c se-e se-k se-s se-t se-u sebe sebs sebt sec- secc sece seck secr secs sect secu seeb seec seek seer sees seet seeu seke sekk sekt seku serb serc sere serk serr sers sert seru sesc sese sess sest set- setc sete sets sett seur skee sker skes sket skrt skss skue skur skut srbc srcc srct sreb srec sres srtr srub ssbr sscc ssce sscs ssec ssee sses sset ssrc ssrs sssb sssc ssss sstb sstc ssts stbc stbs stcc stcs stcu stec stee stek ster stes stet stks strc stre strk strs stru stss sttc sttr stub stuc stue stuk stur stus stut sub- subb subs suc- succ suck sucr sucs suee suer sues suet sueu suke suks suku sur- surc sure surr surs surt suru sus- suse susk suss sust susu sute sutu suus tbbs tbcb tbcc tbce tbrb tbst tcbs tccc tccu tctc tcts tebu teck tecr tecs tect teec teek teer tees teet teke ter- terc tere terk terr ters teru tesc tese