a-be aaaa aaab aaae aaar aaba aabb aabt aaea aaoe aaoo aara aare aaro aart aaru aata aatt abaa abab abae abar abat abau abax abb- abba abbb abbe abbo abbr abbt abee aber abet aboa abob aboo abor abot abou abox abra abro abta abtu abua abue abut aeer aer- aera aero aeta aeto aetr aett aetx aoba aoeu aora aorb aort aout arab arae arar arat arau arax arba arbe area aree areo aret areu arex aroa arob aroe aroo aror arr- arra arre arro arrr arrt arru arta arte arto artr artx arua arub arue arut at-t at-x ataa atab atae atar atat atax atea atee ateo ater atex atob atoe ator atot atra atre atro atru atrx atta atte atto attr attu atua atub atur auaa aube auer aur- aura aure auro aut- aute auto auxa axar axat axer axo- axoa axto axxo ba-x baaa baar baat baba babb babe babo babr babu baer bar- bara barb bare baro barr bart baru barx bata bate bato batt batu bau- baur baux baxt bbau bbbb bbeb bbet bbox bear beat beau beba bebb bebe bebo beeb beer beet beo- beor beot bera bere bero berr bert beru beta bete beto bett betu beur beux boab boar boat boba bobb bobe bobo bobu boea boee boeo boer boet boob booe boor boot boox bor- bora bore boro borr bort boru bota botb bote boto bott boua boue bour bout boxa brab brae brao brat brau brax brea breb bree breo brer bret brex broa brob broe broo bror brot brou brox brrr brue brut brux btaa btex btob btor btrt bttb buar buat buba bubb bube bubo bubu buea buer bueu bur- bura burb bure buro burr burt buru but- buta bute buto butt buxa eaba eara earb eare earo eart eata eate eaux ebba ebbo ebbr eber eboe eboo ebor ebox ebro ebru ebur eeea eeee eera eero eeta eete eetu eext eora eore eota eoto eoux er-x erat erau erba erbb erbe ereb erer eret erob eroe eroo erra erre erro erta ertu erua erub erur etat etbr etee eter etoe etox etra etre etro etta ette etto ettu etua etux euba euer eur- eura eure euro eurt exa- exer exo- exor exrx exta exte extr o-eo oaau oaer oara oare oate obba obbo obea ober obet obex oboe obor obot obox obra obre obro oeax oera oere oeta ooaa ooba oobe ooer oooo oora oore oort ootb orab orae orao orar orat orba orbb orbe orbo orbu ore- orea oreb oreo orer orex oro- oroe oror orot orra orro orta orte orto orub otar otea otee oter oto- otoe otoo otor otra otre otro otta otte otto ottu otur ouat ouea ouer our- oura oure ouro ourt out- outa outb oute outo ouu- oxa- oxea oxer oxo- oxox oxxo raab raat raba rabb rabe rabo rabu raer raob rara rarb rare raro rata rate rato ratt ratu raua raub raue raut raxa rbbb rbbr rea- reae reao rear reat reau reba rebb rebe rebo rebu reeb reet reot reou rera rere rero rert reru reta rete reto retr rett reue reut reuu reux rexx roab roar roat rob- roba robb robe robo robt robu roea roer roet roob roor root roox rora rore roro rort roru rota rote roto rotr rott roua roub roue rout roux roxa roxo rrat rrrr rtee rtex ruba rubb rube rubu ruer ruet rura rure ruro ruru ruta rute ruto rutt rutu taa- taar taat taba tabb tabe tabo tabu taer taoa taor taou tara tarb tare taro tarr tart taru tata tatb tate tato tatr tatt tatu taua taub taue taur taut tax- taxa taxe taxo taxt tbar tbox tbrb tbta tear teat teba tebo tebu teer teet teor ter- tera tere tero terr teru teta tete teto tetr tett tetu tetx teut texa text toab toat toau toba tobe tobo tobt tobu toea toee toer toet tooa toor toot tora tore toro torr tort toru torx tota tote toto totr tott tour tout tox- toxa toxo toxt traa trab trae trao trat trau trax tre- trea tree treo tret treu trex troa troe troo trot trou trox trra trte trtr trub true trut truu trux ttab ttbb tteo tter ttoe tttt tuae tuao tuar tuat tuba tubb tube tubo tubr tubu tuer tuet tuor tura turb ture turo turr turt turu tuta tute tuto tutt tutu tuuo txaa txtr uart uaru uata uatu uaua ubar ubba ubbe ubbo uber ubet ubra ueba uext uor- uore urao urat urau urba urbe ure- urea uret urex uro- uroa uroo urox urra urre urte urur urut utau uter utor utto uttu uuta uuuu uxor uxue xaar xara xare xate xbar xbee xbox xbra xeer xer- xera xero xert xexe xoro xote xout xoxo xtar xtea xtra xtro xura xuxa xuxu xxxo xxxx