a-ha aaaa aaab aaac aaah aaal aaba aabb aabc aabh aabl aabt aaca aacb aacc aach aacl aact aaha aahl aala aalc aall aata aatc aatt abaa abab abac abal abat abb- abba abbb abbt abca abcb abcc abch abcl abct abha abla abta ac-t acaa acab acac acat acba acbl acca accc acch acct acha achh achl acht acla aclc acta actc acth actl actt ahab ahac ahah ahal ahat ahha ahla ahta alaa alac alal alat alb- alba albc alca alcc alha all- alla allh alll alta at-l at-t ataa atab atac atal atat atca atcc atch atcl atha athl atla atta baaa baah baal baat baba babb bac- baca bacc bach bact baha bahl baht bala balc ball balt bata batc bath batt bbbb bbch bblb bcaa bcat bcbc bcca bccc bccl bctc bhat bhca bhcc blaa blab blac blah blat blbt btaa btcc btcl btla bttb caaa caab caac caah caal caat caba cac- caca cacc cach caha cahl caht cala calc call calt cat- cata catb catc cath catt cbac cbal cbat cbbc cbca cbcc cbcl cbct cbha cbhl cblb cblc cbta cbtc cbtl ccaa ccab ccac ccat ccba ccbc ccca cccb cccc cccl ccha cchl ccla cclc cctb cctc cctl cctt chaa chab chac chah chal chat chca chch chha chlc chlt chtt clab clat cltb cltc ctab ctal ctba ctca ctta haab haal haat haba habt haha haht hal- hala halb hall halt hata hatb hath hatt hbtl hcat hcbc hcca hccb hccc hcch hhaa hhat hhcl hhhh hhla hlah htab htcc laaa laac laal laat laba laca lacc lach lacl lact laha laht lala lall lata latc lath latt lbcc lcac lcat lcbc lcca lccc lchc lctl lhhh llat llcc lllc llll ltac ltbl ltcc lttc taa- taal taat taba tabb tabc tabl taca tacc tach tacl tact taha tala talc talh tall tata tatb tath tatt tbca tbcb tbcc tbta tcca tccc tch- tcha tchh tctc thaa thal that thca thch thtb tlac ttab ttbb tttt