a-ii aaaa aaab aaac aaai aaal aaba aabb aabc aabi aabl aaca aacb aacc aaci aacl aaib aaic aaii aala aalc aali aall abaa abab abac abai abal abb- abba abbb abbi abca abcb abcc abci abcl abia abib abic abil abla acaa acab acac acai acba acbl acca accc acci aci- acia acic acla aclc acli aiai aiba aibl aica aicc aiia aiib aiic aila aili alaa alac alai alal alb- alba albc albi alca alcc ali- alia alib alii alil all- alla alli alll ba-i baaa baal baba babb babi bac- baca bacc baci baia baib baic bail bala balc bali ball bbbb bbci bblb bcaa bcbc bcca bccc bcci bccl bcia bial biba bibb bibi bibl bica bicc bici bila bili bill blaa blab blac blic caaa caab caac caal caba cabi cac- caca cacc caci caia caib caic cail cala calc cali call cbac cbal cbbc cbca cbcc cbcl cbia cblb cblc ccaa ccab ccac ccai ccba ccbc ccca cccb cccc ccci cccl ccic ccii ccil ccla cclc ccli ciaa cial ciba cibc cibi cica cicc cici ciia ciii cila cili cill clab clai clib clic clii iaaa iaac iaai iaal iaba iaca iacc iaia iala iall ibac ibca ibia icaa icab icac icai ical icbc icca iccb iccc icci iccl icll iiac iica iiii iila ilac ilal ilbc ilca ilia ilic ill- illa illi laaa laac laal laba labi laca lacc laci lacl laia laic lail lala lali lall lbcc lbia lcac lcbc lcca lccc lcia liac liba libc lica liia liii lila lilb lili lill llcc lllc llll