bbbb bbbs bbeb bbet bbwr bbws bebb bebe beeb beef beer bees beet befe beff beft bere berr bers bert bes- bese bess best bete bets bett betw bewe bffs bfsr bfts bftt breb bree bref brer bres bret brew brrr brrs brsb brsr brst brwe bseb bsee bser bses bset bsff bsfs bsse bsts btrt btss bttb ebbr ebbs ebbw eber ebes eeee eees eefe eers eese eete eets efbr efes efet effs eft- efts erbb erbe ereb erer eres eret erew erfs erft erre errs erse erst erts erws erwt esbs esee eser eses eset esfs esse esst este estr ests esws etbr etee eter etes etfb etfe etre ette ewer ewes ewew ewft ewre ewte ewts fbrs febs feeb feer fees feet fefe feff ferb fere ferr fers fert fese fess fest fete fetr fets fett fewe fewt ffee ffff ffrr ffss fftf fftw free fres fret frew frsb frst fssf fter ftrs ftse ftsr fttw fwse rbbb rbbr rbbs rbss rbst rebb rebe rebs reeb reef rees reet refe reff refr refs reft rere rers rert rese ress rest rete retr rets rett rewe rews rfef rrrr rsee rsre rsts rtbf rtee rtes rtfb rtss rtts sbbs sbef sber sbse sbst sbwr se-e se-f se-s se-t se-w sebe sebs sebt seeb seef seer sees seet seew seff seft serb sere serf serr sers sert sese sess sest set- sete setf sets sett sewe sewr sews sfer sfss sfts sreb sres srtr ssbr ssee sses sset ssrs sssb sssf ssss sstb ssts ssws stbs stee stef ster stes stet stew stfw stre strs stsf stss sttr stwe swbs swbw sweb swee swer swet swre swss swte swts tbbs tbrb tbst teef teer tees teet teff teft ter- tere terf terr ters tese tess test tete tetr tets tett tews tfeb tfrs tfss tre- tree tref tres tret trew trfr trst trte trtr trwe tses tset tsse tssf tssr tsst tsts tswe ttbb tter ttff ttss tttt twbt twee twer twss wbbb wbbe wbbf wbbr wbbs wbbt wbbw wbeb wber wbes wbet wbew wbfb wbfe wbff wbfr wbfs wbft wbfw wbrb wbrf wbrr wbrs wbrt wbrw wbsb wbsf wbsr wbss wbst wbsw wbte wbtf wbtr wbts wbtt wbtw wbwb wbwt webb webe webf webs webt weeb weef weer wees weet wefe weff wefr wefs weft wer- werb were werf werr wers wert werw wesb wese wesr wess west wetb wete wetf wetr wets wett wewe wfbe wfbf wfbr wfbs wfbt wfeb wfer wfff wfrb wfre wfrf wfrs wfrw wfsb wfse wfsr wfss wfst wfte wftf wftr wftw wrbb wrbe wrbf wrbs wrbt wrbw wreb wree wrer wret wrew wrfb wrfe wrff wrfs wrft wrfw wrrb wrre wrrs wrrw wrsb wrse wrsf wrsr wrss wrsw wrtb wrte wrtr wrts wrtw wrwb wrwr wsbb wsbr wsbs wsbt wsbw wseb wses wset wsew wsfb wsff wsfr wsfs wsfw wsrb wsre wsrf wsrs wsrt wsrw wssr wsss wsst wssw wstb wstf wstr wsts wstt wstw wswb wswr wsws wswt wsww wtbb wtbf wtbr wtbs wtrb wtre wtrs wtrt wtrw wtsb wtse wtsf wtsr wtss wttb wtte wttf wttr wtts wttt wttw wtwb wtwf wtwr wtws wtwt wtww wwbb wwbf wwbr wwbt wweb wwer wwet wwfe wwfr wwfw wwrb wwre wwrf wwrr wwrw wwsb wwse wwsf wwsr wwss wwst wwtf wwtr wwtw wwwe wwwr wwws wwww