a-be aaaa aaab aaae aaar aaba aabb aabt aaea aage aara aare aart aata aatt abaa abab abae abag abar abat abax abb- abba abbb abbe abbr abbt abee aber abet abra abta aeer aega aer- aera aeta aetr aett aetx agag agar agat agba agea agee ager aget agga agge agra agre agta agte agtr agxt arab arae arag arar arat arax arba arbe area aree areg aret arex arga argb arge arr- arra arre arrg arrr arrt arta arte artr artx at-t at-x ataa atab atae atar atat atax atea atee ater atex atra atre atrx atta atte attr axar axat axer ba-x baaa baar baat baba babb babe babr baer baga bage bagg bagt bar- bara barb bare barg barr bart barx bata bate batt baxt bbbb bbeb bbet bbga bbrg beag bear beat beba bebb bebe beeb beeg beer beet bega begg bera bere berg berr bert beta bete bett brab brae brag brat brax brea breb bree breg brer bret brex brrr btaa btex btrt bttb eaba eaga eage eara earb eare eart eata eate ebba ebbr eber eeea eeee eega eera eerg eeta eete eext egaa egae egar egat egba egbe egea egee eger eggb egge egra egre egta egte er-x erat erba erbb erbe ereb erer eret erg- erga ergg erra erre erta etag etat etbr etee eter etra etre etta ette exa- exer exge exrx exta exte extr gaar gaba gabb gabe gabr gabt gaea gaer gaga gage gagg gara garb gare garg garr gart gata gate gatr gatt gatx gbag geab gear geat geba gebe geer geet gege gegg gera gerb gere gert geta getb gete getg gett ggbt gggg grab grae grat grbr grea greb gree greg gret grex grrr gtaa gtbr gtea gtta raab raag raat raba rabb rabe raeg raer raga rage ragg rara rarb rare rata rate ratt raxa rbbb rbbr rea- reae rear reat reba rebb rebe reeb reet rega rege regr regt rera rere rerg rert reta rete retr rett rexx rgba rgbe rgtr rrat rrrr rtee rtex taa- taag taar taat taba tabb tabe taer taga tage tagg tara tarb tare targ tarr tart tata tatb tate tatr tatt tax- taxa taxe taxt tbar tbrb tbta tear teat teba teer teet tega tegg tegt ter- tera tere terr teta tete tetr tett tetx texa text traa trab trae trag trat trax tre- trea tree treg tret trex trge trra trte trtr ttab ttbb tter tttt txaa txga txtr xaar xaga xara xare xate xbar xbee xbra xeer xega xer- xera xert xexe xtar xtea xtra xxxx