a-be aaaa aaab aaae aaal aaba aabb aabl aabt aaea aala aale aall aata aatt abaa abab abae abal abat abax abb- abba abbb abbe abbt abee abel abet abla able abta aela aeta aett aetx alaa alae alal alat alb- alba albe alea alee alet alex all- alla alle alll alta alte altx alxa at-l at-t at-x ataa atab atae atal atat atax atea atee atel atex atla atle atta atte axal axat axel axle ba-x baaa baal baat baba babb babe bael bala bale ball balt bata bate batt baxt bbbb bbeb bbet bblb beal beat beba bebb bebe beeb beel beet bela bele bell belt beta bete bett blaa blab blae blat blbt blea bleb blee blet btaa btex btla bttb e-la eaba eala eale eata eate eaxl ebal ebba ebel ebla eeea eeee eele eeta eete eext el-b elab elal elat elba elbe elea elee elet elex ella elle elta elte etal etat etee etel etla etta ette exa- exel exta exte extl laaa laal laat laax laba labe lael laet lala lale lall lata late latt laxa laxe leaa leal leat leba leea leel leet lela lele lell leta lete lett lexa lext lexx llat llet llll ltae ltbl ltee lxxx taa- taal taat taba tabb tabe tabl tael tala tale tall talx tata tatb tate tatt tax- taxa taxe taxt tbta teal teat teba teel teet tel- tela tele tell telt teta tete tett tetx texa text tltx ttab ttbb tttt txaa xala xall xate xbee xbel xela xexe xlet xtal xtea xxxx