a-be a-do aaaa aaab aaad aaae aaav aaba aabb aabd aabt aada aade aadt aaea aaev aaoe aaoo aata aatt aava abaa abab abad abae abat abb- abba abbb abbe abbo abbt abda abdo abed abee abet aboa abob abod aboo abot abov abta abva abvd adaa adab adad adae adao adat adba adda addd adde addo adea adeb adee adeo adet adob adod adoe adoo adot adta advb advt aede aedt aeta aeto aett aeva aoba aotd at-t ataa atab atad atae atat atdt atea ated atee ateo atob atod atoe atot atta atte atto avab avao avat avda avea aveo avot avva avvo baaa baad baat baba babb babe babo bada badb badd bade bado baed bata bate bato batt bava bave bbad bbbb bbdd bbdo bbeb bbet bdav bead beat beav beba bebb bebe bebo beda bede bedo beeb beed beet beo- beod beot beta bete beto bett betv bevo boab boad boat boba bobb bobe bobo boda bodb bode bodo boea boee boeo boet boob bood booe boot bota botb botd bote boto bott bova bove bovo btaa btdt btob bttb d-bo d-tv daab daad daae daba dabb dabo dabt dada dade dado daeb data date dato datt dava dave dbtt dddd ddot ddtv dead deae deba debe debt deda dedd dede dedo deeb deed deet deev deta dete deto deva deve devo doab doae doat doba dobb dobe dod- doda dodd dode dodo doea doob dood doot dota dotd dote doto dott dove dtaa dted dtot dvda dvoa eaba eada eadb eadd eata eate eave ebba ebbo ebed eboe eboo edad edda edde eddo ede- edea edod edta edtv edve eede eeea eeee eeta eete eeva eode eota eotd eoto etat etee etoe etta ette etto etvo evae evat evdb evea evet evoe evoo o-eo oade oate obad obba obbo obdt obea obed obet oboe obot obtd odbo odda oddd odea oded odeo odet odoo odot odva oedo oeta ooaa ooba oobe ooda oooo ootb otbd otea oted otee oto- otoe otoo otov otta otte otto ovda ovde ovee ovet ovo- ovod ovoo ovot taa- taat taba tabb tabe tabo tada tade tado taoa tata tatb tate tato tatt tatv tava tave tavo tbta tddb tdtv tead teat teba tebo teda tedd tede teed teet teev teta tete teto tett teva toab toad toat toba tobe tobo tobt toda todd tode todo todt toea toed toee toet tooa tood toot tota totd tote toto tott tova tove tovo ttab ttbb tteo ttoe tttt tvad tvtv vaad vaat vada vade vado vata vate vato vatt vava vdot veat veba veda vede vedo veet veta vete veto veve vevo voad voat voda vode vodo voet voot vota votd vote voto vvob vvvv