a-be a-ii aaaa aaab aaae aaai aaba aabb aabi aabt aaea aaib aaii aata aatt abaa abab abae abai abaj abat abb- abba abbb abbe abbi abbt abee abet abia abib abie abit abta aebi aeit aeta aett aiai aiba aiea aiee aiet aiia aiib aija aita aite aiti aitt ajab ajat ajba ajee ajet ajit at-t ataa atab atae atai atat atea atee atei atia atie atit atta atte atti ba-i baaa baat baba babb babe babi baia baib baie bait baja baji bata bate bati batt bbbb bbeb bbet beat beba bebb bebe bebi beeb beej beet beia beij beit beja beta bete beti bett biaj biat biba bibb bibe bibi bieb biet bija biji bita bite bitt btaa btie bttb eaba eata eate eati ebba ebit eeea eeee eeta eete eiei eija eiji eita eitb eiti ejit ejji etai etat etee etta ette etti i-be iaaa iaai iaat iaba iaea iaia iata iate iati ibat ibea ibet ibia ibie ibtb ieat ieet ieie ieta iett iiie iiii iiit iita iitt ijet ijji itaa itai itat itbe itea itet itia itie itta jaba jabi jaja jaji jati jbaa jeat jebb jebe jeet jeit jeta jetb jete jeti jett jibb jibe jibi jiet jije jiji jiti taa- taat taba tabb tabe tabi taia tait tata tatb tate tati tatt tbit tbta teat teba teej teet teia teie teja teta tete teti tett tiaa tiab tiba tibi tie- tiea tiee tiei tiet tiit tiji tita tite titi titt ttab ttbb tttt