bbbb bbbs bbci bbeb bbet bcbc bcbs bccc bcci bccs bcec bces bcet bcie bcis bcit bcsc bcss bctc bcts bcuc bebb bebe bebi beci becs becu beeb bees beet beic beis beit bes- bese bess best betc bete beti bets bett betu bibb bibe bibi bibs bicc bice bici bics bieb bies biet bieu biis bis- bisc bise biss bist bisu bitc bite bits bitt bitu bsci bscs bseb bsec bsee bses bset bsic bssc bsse bsts btcc btcs btec btie btss bttb btus bubb bube bubi bubs bubu bucc buce buci bucs bucu bueu buic buie buis buit buiu busc buse busi buss bust busu but- bute buti buts butt buus cbbc cbbs cbcc cbce cbcs cbct cbcu cbec cbee cbet cbit cbsc cbse cbsi cbtc cbus ccbc cccb cccc ccci cccs cccu ccee ccic ccii ccis ccsi ccss ccst cctb cctc cctt ccuc ccus ccut cebs cebu cec- cece ceci cecs cect ceeb ceec cees cesc cese cesi cess cest cet- cete ceti cets ceui cibc cibe cibi cicc cici cics cict cicu ciee cies ciii ciis ciit cis- cisc cise ciss cist citb cite citi cits citt citu ciuc cius cscb cscc csce csci cscs csec csee cset csib csis csit csse cstc csts csus ctbi ctbs ctec ctic ctsc ctss ctsu ctts cub- cubb cube cubi cubs cucc cuce cuci cues cui- cuis cuit cusb cuss cust cusu cut- cutc cute cuts cutt ebbc ebbs ebcc ebes ebic ebis ebit ebus ecbc ecbe eccb eccc ecce ecci ecct eces ecib ecis ecit ecsc ecse ecss ecsu ect- ectc ects ecus eecs eeee eees eese eesi eetc eete eets eetu eics eiec eiei eies eise eiss eist eitb eitc eiti esbs escb esce esci escs escu esee eses eset esie esis esit esse essi esst essu estc este ests esui esus etbc etcc etcs etec etee etes etic etsi etsu ette etti ettu etui eubc eubi euse i-be ibcs ibec ibes ibet ibie ibis ibss ibtb ibtc ibts ibus icbc icbs iccb iccc icci iccs icct iccu icec icee ices icet icis icsb icsc icse icsi icss icst icts icub icue icus iecc ieet ieie iesc iesi iest iesu iett iies iiie iiii iiis iiit iisc iisi iist iisu iitt iiuc isbe isbt iscc isci iscs isct iscu iseb isec isee ises iset isic isie isis isit issc isse issi isss issu istc iste isti ists isus itbe itbs itcs itec ites itet itic itie itis itse itsi itsu iucc iuce iuiu iuse iuss iust s-ib s-ic s-ii sbbs sbcc sbcs sbct sbic sbse sbsi sbst sbtc sbus scbi sccc scce sccs scct scec scee scet sci- scic scie scis scit scsc scsi scst scsu sctc scts scub scut se-c se-e se-i se-s se-t se-u sebe sebi sebs sebt sec- secc sece secs sect secu seeb seec sees seet seeu seie seii seis seit seiu sesc sese sesi sess sest set- setc sete seti sets sett seui sibc sibe sibi sibs sibu sicc sice sici sics sicu siec sies siit sisc sise sisi siss sist sisu sit- sitc site siti sits sitt situ siue siui sius siut sscc ssce ssci sscs ssec ssee sses sset ssis ssit sssb sssc sssi ssss sstb sstc ssts stbc stbs stcc stcs stcu stec stee stes stet stib stic stie stis stit stsi stss sttc stub stuc stue stus stut sub- subb subi subs suc- succ suci sucs suee sues suet sueu suie suis suit sus- suse susi suss sust susu sute suti sutu suus tbbs tbcb tbcc tbce tbit tbst tcbs tccc tccu tctc tcts tebu tecs tect teec tees teet teic teie teis teiu tesc tese tess test tete teti tets tett tetu teut tibi tibs tibu ticc tice tics tie- tiee tiei ties tiet tiit tiiu tisb tise tisi tiss tist titc tite titi tits titt titu tsbc tscc tsec tses tset tsis tsse tssi tsst tstc tsts tsui ttbb ttss tttt tubb tube tubs tubu tucc tuei tues tuet tuis tuit tuiu tusc tusi tuss tust tute tuti tuts tutt tutu u-ie ubbe ubbi ubet ubic ubii ubis ubit ucbc ucci uces ucsb ucsc ucst ucsu ucut uess uies uise uist uits usbc usbe usbs uscc usce uscs usee uses uset usie usis ussb ussc usse usss usst ussu ustb ustc uste usti usts usui usus utec utes utis utsc utti uttu uusi uuuu