a-be a-ii aaaa aaab aaad aaae aaai aaba aabb aabd aabi aabt aada aade aadi aadt aaea aaib aaii aata aatt abaa abab abad abae abai abat abb- abba abbb abbe abbi abbt abda abdi abed abee abet abia abib abid abie abit abta adaa adab adad adae adai adat adba adbi adda addd adde addi adea adeb adee adet adia adib adie adit adta aebi aede aedt aeit aeta aett aiai aiba aida aidb aide aidi aidt aiea aiee aiet aiia aiib aiid aita aite aiti aitt at-t ataa atab atad atae atai atat atdi atdt atea ated atee atei atia atid atie atit atta atte atti ba-i baaa baad baat baba babb babe babi bada badb badd bade badi baed baia baib baid baie bait bata bate bati batt bbad bbbb bbdd bbeb bbet bdii bead beat beba bebb bebe bebi beda bede bedi beeb beed beet beia beit beta bete beti bett biad biat biba bibb bibe bibi bida bide bidi bieb bied biet bita bitd bite bitt btaa btdt btie bttb daab daad daae daba dabb dabt dada dade dadi daeb daia daid daie dait data date dati datt dbit dbtt dddd ddie dead deae deba debe debi debt deda dedd dede dedi deeb deed deet deid deie deit deta dete dia- diab diad diat diba dibb dibe dida dide didi diea dieb died diet diii dita dite diti ditt dtaa dted eaba eada eadb eadd eadi eata eate eati ebba ebed ebid ebit edad edda edde eddi ede- edea edei edia edie edit edta eede eeea eeee eeta eete eid- eide eidi eied eiei eita eitb eiti etai etat etee etta ette etti i-be iaaa iaai iaat iaba iadb iadt iaea iaia iata iate iati ibad ibat ibea ibed ibet ibia ibid ibie ibtb idad idae idat idbe idda idea ided idee idia idid idie idta ieat ieet ieie ieta iett iida iide iied iiie iiii iiit iita iitt itaa itai itat itbe itea itet itia itie itta taa- taat taba tabb tabe tabi tada tade taia tait tata tatb tate tati tatt tbit tbta tddb tead teat teba teda tedd tede tedi teed teet teia teie teta tete teti tett tiaa tiab tiba tibi tidd tide tie- tiea tied tiee tiei tiet tiit tita tite titi titt ttab ttbb tttt