a-be aaaa aaab aaac aaae aaar aaba aabb aabc aabt aaca aacb aacc aace aaco aacr aact aaea aaec aaoe aaoo aara aarc aare aaro aart aata aatc aatt abaa abab abac abae abar abat abax abb- abba abbb abbe abbo abbr abbt abca abcb abcc abcr abct abec abee aber abet aboa abob aboo abor abot abox abra abrc abro abta ac-t acaa acab acac acae acar acat acba acca accc acce acco acct ace- acea acec acer acet acoa acoe acor acot acr- acra acrc acre acro acrr acta actc acte acto actt aeac aecb aect aeer aer- aera aerc aero aeta aetc aeto aetr aett aetx aoba aoca aoce aora aorb aort aotc arab arac arae arar arat arax arba arbe arc- arca arce arco arct area arec aree areo aret arex aroa arob aroe aroo aror arr- arra arrc arre arro arrr arrt arta artc arte arto artr artx at-t at-x ataa atab atac atae atar atat atax atca atcc atco atcr atea atec atee ateo ater atex atob atoc atoe ator atot atra atrc atre atro atrx atta atte atto attr axar axat axce axer axo- axoa axto axxo ba-x baaa baar baat baba babb babe babo babr bac- baca bacc bace baco bact baer bar- bara barb barc bare baro barr bart barx bata batc bate bato batt baxt bbbb bbeb bbet bbox bbrc bcaa bcar bcat bcbc bcca bccc bcec bcer bcet bcor bcra bctc bear beat beba bebb bebe bebo beca beeb beer beet beo- beor beot bera berc bere bero berr bert beta betc bete beto bett boab boac boar boat boba bobb bobe bobo boca boce boco boea boec boee boeo boer boet boob booc booe boor boot boox bor- bora bore boro borr bort bota botb bote boto bott boxa brab brac brae brao brat brax brca brcb brce brea breb brec bree breo brer bret brex broa brob broc broe broo bror brot brox brrr brtc btaa btcc btcx btec btex btob btor btrc btrt bttb c-bo caaa caab caac caat caba cabe cabo cac- caca cacc cace caco cacr caec caer caex caor cara carb carc care caro carr cart carx cat- cata catb catc cate cato catt caxa cbac cbar cbat cbax cbbc cbca cbcc cbce cbcr cbct cbea cbec cbee cber cbet cbot cbox cbre cbrt cbta cbtc cbxa ccaa ccab ccac ccar ccat ccba ccbc ccca cccb cccc ccee ccob ccoc ccra ccrc ccre ccrt cctb cctc cctt ceac cear ceat ceba cec- ceca cece ceco cect ceeb ceec ceor cer- cera cerc cere cero cert cet- ceta cete ceto cexe coat coax coba cobb cobe cobo coca coce coco coct coex coob coot cor- cora corb corc core coro corr cort cota cotb cotc cote coto cott coxa coxe crab crac crar crat crax crbc crca crcc crce crcr cre- crea creb crec cree creo cret crex crob croc croe croo cror crot crrt crtc ctab ctae ctba ctca ctec ctor ctot ctrc ctta cxro cxxx eaba eaca eacc eaec eara earb eare earo eart eata eate ebac ebba ebbc ebbo ebbr ebcc eber eboe eboo ebor ebox ebro ecaa ecac ecao ecar ecat ecbc ecbe ecca eccb eccc ecce ecco ecct eco- ecot ecra ecrc ecrr ect- ecta ectc ecto eeca eeea eeee eeoc eera eerc eero eeta eetc eete eext eora eore eota eotc eoto er-x erat erba erbb erbe erca ercc erce ereb erec erer eret erob eroc eroe eroo erra errc erre erro erta etat etbc etbr etcc etco etec etee eter etoe etox etra etre etro etta ette etto exa- exco exec exer exo- exor exrx exta exte extr o-eo oaer oara oare oate obba obbo obea obec ober obet obex oboe obor obot obox obra obre obro ocab ocac ocat ocbc occa occc occt oce ocee ocet ocra ocre ocro ocrr oct- octa octe octo oeax oec- oeca oecc oeec oera oere oeta ooaa ooba oobe oocr ooer oooo oora oore oort ootb orab orac orae orao orar orat orba orbb orbe orbo orca orce orco ore- orea oreb orec oreo orer orex oro- oroe oror orot orra orro orta ortc orte orto otac otar otea otee oter oto- otoe otoo otor otra otre otro otta otte otto oxa- oxea oxer oxo- oxox oxxo raab raat raba rabb rabe rabo rac- raca racc race raco ract raec raer raob raoc rara rarb rare raro rata rate rato ratt raxa rbbb rbbr rcac rcbc rcbo rccb rccc rcet rctc rea- reac reae reao rear reat reba rebb rebe rebo reca recc rece recr rect reeb reet reot rera rere rero rert reta rete reto retr rett rexx roab roar roat rob- roba robb robe robo robt roca rocc roce roco roea roer roet roob roor root roox rora rorc rore roro rort rota rotc rote roto rotr rott roxa roxo rrat rrrr rtca rtcc rtce rtee rtex taa- taar taat taba tabb tabc tabe tabo taca tacc tace taco tact taec taer taoa taor tara tarb tarc tare taro tarr tart tata tatb tate tato tatr tatt tax- taxa taxe taxo taxt tbar tbca tbcb tbcc tbce tbox tbrb tbta tcca tccc tctc teac tear teat teba tebo teca teco tecr tect teec teer teet teor ter- tera terc tere tero terr teta tete teto tetr tett tetx texa text toab toat toba tobe tobo tobt toca toce toco toea toee toer toet tooa toor toot tora torc tore toro torr tort torx tota totc tote toto totr tott tox- toxa toxo toxt traa trab trac trae trao trat trax trca trcc tre- trea trec tree treo tret trex troa troc troe troo trot trox trra trtc trte trtr ttab ttbb tteo tter ttoe tttt txaa txtr xaar xace xact xara xare xate xbar xbee xbox xbra xcat xeer xer- xera xero xert xexe xobc xoca xoco xoro xote xoxo xtar xtea xtra xtro xxxo xxxx