a-ha aaaa aaab aaac aaah aaal aaar aaba aabb aabc aabh aabl aabt aaca aacb aacc aach aacl aacr aact aaha aahl aala aalc aall aara aarc aart aata aatc aatt abaa abab abac abal abar abat abb- abba abbb abbr abbt abca abcb abcc abch abcl abcr abct abha abhr abla abra abrc abta ac-t acaa acab acac acar acat acba acbl acca accc acch acct acha achh achl achr acht acla aclc aclr acr- acra acrc acrr acta actc acth actl actt ahab ahac ahah ahal ahar ahat ahha ahla ahra ahrc ahrr ahta alaa alac alal alar alat alb- alba albc alca alcc alha all- alla allh alll allr alta arab arac arah aral arar arat arba arbh arc- arca arch arct arh- arla arr- arra arrc arrh arrr arrt arta artc arth artr at-l at-t ataa atab atac atal atar atat atca atcc atch atcl atcr atha athl atla atra atrc atta attr baaa baah baal baar baat baba babb babr bac- baca bacc bach bact baha bahl bahr baht bala balc ball balt bar- bara barb barc barh barr bart bata batc bath batt bbbb bbch bblb bbrc bcaa bcar bcat bcbc bcca bccc bccl bcra bctc bhar bhat bhca bhcc bhra bhrt blaa blab blac blah blat blbt blrc brab brac brah brat brca brcb brrr brtc btaa btcc btcl btla btrc btrt bttb caaa caab caac caah caal caat caba cac- caca cacc cach cacr caha cahl caht cala calc call calt cara carb carc carl carr cart cat- cata catb catc cath catt cbac cbal cbar cbat cbbc cbca cbcc cbcl cbcr cbct cbha cbhl cblb cblc cbrh cbrl cbrt cbta cbtc cbtl ccaa ccab ccac ccar ccat ccba ccbc ccca cccb cccc cccl ccha cchl cchr ccla cclc ccra ccrc ccrl ccrt cctb cctc cctl cctt chaa chab chac chah chal char chat chca chch chha chlc chlr chlt chra chrb chrc chrr chrt chtr chtt clab clar clat clra cltb cltc crab crac crar crat crbc crca crcc crcr crrt crtc crtl ctab ctal ctba ctca ctrc ctrl ctta haab haal haar haat haba habt haha haht hal- hala halb hall halt hara harc harh harl harr hart hata hatb hath hatt hbar hbtl hcat hcbc hcca hccb hccc hcch hhaa hhat hhcl hhhh hhla hlah hrac hrbl hrrc hrta hrtb htab htcc htra httr laaa laac laal laar laat laba labr laca lacc lach lacl lact laha lahr laht lala lall lara larb larc larr lart lata latc lath latt lbar lbcc lblr lbrt lcac lcat lcbc lcca lccc lchc lchr lcra lcrl lctl lhhh llat llcc lllc llll lrac lral lrat lrba lrrc lrrr lrta ltac ltbl ltcc lthr ltra lttc lttr raab raat raba rabb rabl rac- raca racc rach ract raha rahl rahr raht rala ralb rall ralt rara rarb rata rath ratt rbbb rbbr rbcl rcac rcbc rccb rccc rchb rctc rlab rrah rrat rrrr rtca rtcc rtlt taa- taal taar taat taba tabb tabc tabl taca tacc tach tacl tact taha tahr tala talc talh tall tara tarb tarc tarr tart tata tatb tath tatr tatt tbar tbca tbcb tbcc tbrb tbta tcca tccc tch- tcha tchh tchr tctc thaa thal thar that thca thch thra thtb thtr tlac traa trab trac tral trat trca trcc trcl trra trtc trtr ttab ttbb tttt