a-ii aaaa aaab aaai aaal aaba aabb aabi aabl aabt aaib aaii aala aali aall aata aatt abaa abab abai abal abat abb- abba abbb abbi abbt abia abib abil abit abla abta aiai aiba aibl aiia aiib aila aili aita aiti aitt alaa alai alal alat alb- alba albi ali- alia alib alii alil alit all- alla alli alll alta alti at-l at-t ataa atab atai atal atat atia atil atit atla atli atta atti ba-i baaa baal baat baba babb babi baia baib bail bait bala bali ball balt bata bati batt bbbb bblb bial biat biba bibb bibi bibl bila bili bill bilt bita bitt blaa blab blat blbt blit btaa btla bttb iaaa iaai iaal iaat iaba iaia iala iall iata iati ibat ibia ibtb ibtl iiii iiit iila iita iitt ilal ilia ilit ill- illa illi illt itaa itai ital itat itia itil itll itta laaa laal laat laba labi laia lail lait lala lali lall lata lati latt lbia liat liba liia liii lila lilb lili lill lilt lita litb liti litl litt llat llll ltbl ltib taa- taal taat taba tabb tabi tabl taia tail tait tala tali tall tata tatb tati tatt tbil tbit tbta tiaa tiab tial tiba tibi tiit tila till tilt tita titi titt tlli ttab ttbb tttt