a-ha aaaa aaab aaac aaah aaal aaba aabb aabc aabh aabl aaca aacb aacc aach aacl aaha aahl aala aalc aall abaa abab abac abal abb- abba abbb abca abcb abcc abch abcl abha abla acaa acab acac acba acbl acca accc acch acha achh achl acla aclc ahab ahac ahah ahal ahha ahla alaa alac alal alb- alba albc alca alcc alha all- alla allh alll baaa baah baal baba babb bac- baca bacc bach baha bahl bala balc ball bbbb bbch bblb bcaa bcbc bcca bccc bccl bhca bhcc blaa blab blac blah caaa caab caac caah caal caba cac- caca cacc cach caha cahl cala calc call cbac cbal cbbc cbca cbcc cbcl cbha cbhl cblb cblc ccaa ccab ccac ccba ccbc ccca cccb cccc cccl ccha cchl ccla cclc chaa chab chac chah chal chca chch chha chlc clab haab haal haba haha hal- hala halb hall hcbc hcca hccb hccc hcch hhaa hhcl hhhh hhla hlah laaa laac laal laba laca lacc lach lacl laha lala lall lbcc lcac lcbc lcca lccc lchc lhhh llcc lllc llll