a-be a-do aaaa aaab aaad aaae aaba aabb aabd aabt aada aade aadt aaea aaoe aaoo aata aatt abaa abab abad abae abat abax abb- abba abbb abbe abbo abbt abda abdo abed abee abet aboa abob abod aboo abot abox abta adaa adab adad adae adao adat adba adda addd adde addo adea adeb adee adeo adet adob adod adoe adoo adot adox adta aede aedt aeta aeto aett aetx aoba aotd at-t at-x ataa atab atad atae atat atax atdt atea ated atee ateo atex atob atod atoe atot atta atte atto axat axed axo- axoa axto axxo ba-x baaa baad baat baba babb babe babo bada badb badd bade bado baed bata bate bato batt baxt bbad bbbb bbdd bbdo bbeb bbet bbox bead beat beba bebb bebe bebo beda bede bedo beeb beed beet beo- beod beot beta bete beto bett boab boad boat boba bobb bobe bobo boda bodb bode bodo boea boee boeo boet boob bood booe boot boox bota botb botd bote boto bott boxa btaa btdt btex btob bttb d-bo daab daad daae daba dabb dabo dabt dada dade dado daeb data date dato datt dbtt dddd ddot dead deae deba debe debt deda dedd dede dedo deeb deed deet deta dete deto dex- dexa dexe dext do-x doab doae doat doba dobb dobe dod- doda dodd dode dodo doea doob dood doot dota dotd dote doto dott doxa dtaa dted dtot dtox dttx dtxt dxab dxbe dxbt dxed dxxx eaba eada eadb eadd eata eate ebba ebbo ebed eboe eboo ebox edad edax edda edde eddo ede- edea edex edod edta eede eeea eeee eeta eete eext eode eota eotd eoto etat etee etoe etox etta ette etto exa- exda exed exo- exod exta exte o-eo oade oate obad obba obbo obdt obea obed obet obex oboe obot obox obtd odax odbo odda oddd odea oded odeo odet odex odoo odot oeax oedo oeta ooaa ooba oobe ooda oooo ootb otbd otea oted otee oto- otoe otoo otta otte otto oxa- oxea oxo- oxox oxxo taa- taat taba tabb tabe tabo tada tade tado taoa tata tatb tate tato tatt tax- taxa taxe taxo taxt tbox tbta tddb tead teat teba tebo teda tedd tede tedx teed teet teta tete teto tett tetx texa text toab toad toat toba tobe tobo tobt toda todd tode todo todt toea toed toee toet tooa tood toot tota totd tote toto tott tox- toxa toxo toxt ttab ttbb tteo ttoe tttt txaa x-ed xado xate xbee xbox xexe xote xoxo xtea xxxo xxxx