a-be a-wa aaaa aaab aaae aaaf aaar aaba aabb aabt aabw aaea aafa aafb aaff aaoe aaoo aaow aara aare aaro aart aata aatf aatt aatw aawt aaww abaa abab abae abaf abar abat abaw abb- abba abbb abbe abbo abbr abbt abee aber abet abff aboa abob abof aboo abor abot abow abra abro abta abwa abwe abwr aeaf aeer aer- aera aero aeta aetf aeto aetr aett afaa afao afar afat afee afer afet afew affa affo afft affw afoa afoe afoo afor afr- afra afre afro afta afte aoba aora aorb aort aotf arab arae araf arar arat araw arba arbe area aree aref areo aret arew arfa arfb arff arft aroa arob aroe aroo aror arow arr- arra arre arro arrr arrt arta arte arto artr arwa arwe at-t ataa atab atae atar atat atea atee atef ateo ater atew atfb atfe atob atoe atof ator atot atra atre atro atta atte atto attr atwa atwo atwt awae awar awbe awe- aweb awee awer awet awoo awow awre awro awwa baaa baaf baar baat baba babb babe babo babr baer baff bafo baft bar- bara barb bare barf baro barr bart bata bate batf bato batt baw- bawe bbbb bbeb bbet bbwr beaf bear beat beaw beba bebb bebe bebo beeb beef beer beet befa befe beff befo beft beo- beof beor beot bera bere bero berr bert beta bete beto bett betw bewa bewe bfta bftt boab boar boat boba bobb bobe bobo bobw boea boee boef boeo boer boet bofa bofe boff boob booe boof boor boot boow bor- bora bore borf boro borr bort borw bota botb bote boto bott botw bowa bowe bowr bowt brab brae braf brao brat braw brea breb bree bref breo brer bret brew broa brob broe broo bror brot brow brrr brwe btaa btaf btob btor btrt bttb btwo bwaa eaaf eaba eafb eara earb eare earo eart earw eata eate ebba ebbo ebbr ebbw eber eboe eboo ebor ebow ebro eeea eeee eefa eefe eera eero eeta eete efab efbr efeo efet effa efor eft- efta eora eore eota eoto eotw eraf erat erba erbb erbe ereb erer eret erew erft erob eroe eroo erra erre erro erta erwt etat etbr etee eter etfa etfb etfe etoe etra etre etro etta ette etto ewer ewew ewft ewre ewte faaa faba fabe fabo faeb fafa fafe faff fafo fara farb fare faro farr fart fata fate fatf fato fatt fawe fawf fawt fbar feaf fear feat feba febo feeb feer feet fefe feff fefo feof fera ferb fere fero ferr fert feta fete fetr fett fewa fewe fewt ffar ffee ffff ffrr fftf fftw foaf foar foba fobt foer fofo foof foot for- fora forb fore foro forr fort fota fote foto fott fotw fowe frab frae frat frea free freo fret frew frob froe frot frow frta ftea fter fttw ftwo o-eo oaer oafo oara oare oate obba obbo obea ober obet oboe obor obot obra obre obro oera oere oeta ofer off- offa offe offo offr ofor ofra ofre ofta ooaa ooba oobe ooer ooff oooo oora oore oort ootb ootw orab orae orao orar orat orba orbb orbe orbo ore- orea oreb oreo orer orfe orff oro- oroe orof oror orot orra orro orta orte orto orwa orwe orwo otar otea otee oter oto- otoe otof otoo otor otow otra otre otro otta otte otto otwo owar owea ower owfe owoe owow owre owt- owte owtt owwa raab raaf raat raba rabb rabe rabo raef raer rafa rafe raff raft raob rara rarb rare rarf raro rata rate ratf rato ratt rawa rawe rawr raww rbaf rbbb rbbr rea- reae reaf reao rear reat reba rebb rebe rebo reeb reef reet refe reff refr reft reof reot rera rere rero rert reta rete reto retr rett rewa rewe rfae rfef roab roaf roar roat rob- roba robb robe robo robt roea roer roet rofe roff rofo roob roof roor root rora rore roro rort rota rote roto rotr rott rowa rowb rowe rowf rowr rowt roww rrat rrrr rtbf rtee rtfb taa- taaf taar taat taba tabb tabe tabo taer tafa tafe taff tafo taft taoa taor tara tarb tare tarf taro tarr tart tata tatb tate tato tatr tatt tawa tawe tawo tawt taww tbaf tbar tbrb tbta tear teat teaw teba tebo teef teer teet teff teft teor teow ter- tera tere terf tero terr teta tete teto tetr tett tewa tewo tfae tfeb tfot toab toat toaw toba tobe tobo tobt toea toee toer toet tofa toff tofo toft tooa toof toor toot tora tore torf toro torr tort tota tote toto totr tott towa towe traa trab trae traf trao trat traw tre- trea tree tref treo tret trew trfr troa troe troo trot trow trra trte trtr trwe ttab ttbb tteo tter ttfa ttff ttoe tttt twae twat twbt twee twer two- twoa twob twof twoo twot waaa waaf waao waar waat waaw waba wabb wabe wabf wabo wabr wabt wabw waeb waee waer waet waew wafa wafb wafe waff wafr waft waob waoe waoo waor waow war- wara warb ware warf waro warr wart warw wata watb wate wato watr watt watw wawa wawb wawe wawf wawo wawt wbaa wbab wbae wbaf wbar wbat wbbb wbbe wbbf wbbo wbbr wbbt wbbw wbea wbeb wber wbet wbew wbfa wbfb wbfe wbff wbfo wbfr wbft wbfw wbob wbor wbow wbrb wbrf wbrr wbrt wbrw wbta wbte wbtf wbto wbtr wbtt wbtw wbwb wbwo wbwt weaa weaf weao wear weat webb webe webf webo webt weeb weef weeo weer weet wefa wefe weff wefr weft weoa weow wer- wera werb were werf wero werr wert werw weta wetb wete wetf weto wetr wett wewe wewo wfaa wfab wfae wfar wfat wfaw wfbe wfbf wfbr wfbt wfea wfeb wfer wfff wfob wfor wfot wfra wfrb wfre wfrf wfro wfrw wfta wfte wftf wftr wftw wfwa wfwo woaa woab woar woat woba wobb