a-be aaaa aaab aaad aaae aaba aabb aabd aabt aada aade aadt aadu aaea aata aatt abaa abab abad abae abat abau abax abb- abba abbb abbe abbt abda abdu abed abee abet abta abtu abua abud abue abut adaa adab adad adae adat adba adda addd adde addu adea adeb adee adet adta adua adub adue aede aedt aeta aett aetx at-t at-x ataa atab atad atae atat atax atdt atea ated atee atex atta atte attu atua atub auaa aube aude aut- aute auxa axat axed ba-x baaa baad baat baba babb babe babu bada badb badd bade badu baed bata bate batt batu bau- baud baux baxt bbad bbau bbbb bbdd bbeb bbet bead beat beau beba bebb bebe beda bede bedu beeb beed beet beta bete bett betu beux btaa btdt btex bttb buad buat buba bubb bube bubu buda budb budd bude budu buea bueu but- buta bute butt buxa daab daad daae daau daba dabb dabt dabu dada dade dadu daeb daeu data date datt datu daub daud daue daut daux dbtt dddd ddub dead deae deau deba debe debt debu deda dedd dede dedu deeb deed deet deta dete deua deue deut deux dex- dexa dexe dext dtaa dted dttx dtxt duaa duab duad duat dub- duba dubb dube dubu duda dudd dude dudu duet duta dute duut dxab dxbe dxbt dxed dxue dxxx eaba eada eadb eadd eata eate eaux ebba ebed edad edax edda edde ede- edea edex edta eede eedu eeea eeee eeta eete eetu eext etat etee etta ette ettu etua etux euba eude exa- exda exed exta exte taa- taat taba tabb tabe tabu tada tade tata tatb tate tatt tatu taua taub taue taut tax- taxa taxe taxt tbta tddb tead teat teba tebu teda tedd tede tedx teed teet teta tete tett tetu tetx teut texa text ttab ttbb tttt tuae tuat tuba tubb tube tubu tude tudu tuet tuta tute tutt tutu txaa uata uatu uaua ubba ubbe ubet ubud udaa udad udau udea udet ueba ueda uext utau uttu uuta uuuu uxue x-ed xate xbee xexe xtea xuda xuxa xuxu xxxx