-th a-a a-b a-c a-t aaa aab aac aah aak aas aat ab- aba abb abc abh abk abs abt ac- aca acb acc ach ack acs act aha ahb ahc ahh ahk ahs aht aka akb akc akh akk aks as- asa asb asc ash ask ass ast at- ata atb atc ath ats att baa bab bac bah bak bas bat bba bbb bbc bbh bbk bbs bbt bca bcb bcc bch bck bcs bct bha bhb bhc bhh bhk bhs bht bka bkb bkc bkk bks bkt bsa bsb bsc bsh bsk bss bst bta btb btc bth btk bts btt c-- caa cab cac cah cak cas cat cba cbb cbc cbh cbk cbs cbt cca ccb ccc cch cck ccs cct ch- cha chb chc chh chk chs cht cka ckb ckc ckh cks ckt csa csb csc csh csk css cst cta ctb ctc cth ctk cts ctt haa hab hac hah hak has hat hba hbb hbc hbh hbk hbs hbt hca hcb hcc hch hck hcs hct hha hhb hhc hhh hhk hhs hht hka hkb hkh hkk hks hkt hsa hsb hsc hsh hsk hss hst hta htb htc hth htk hts htt k-t ka- kaa kab kac kah kak kas kat kba kbb kbc kbh kbk kbs kca kcb kcc kch kck kcs kct kha khh khk khs kkb kkc kkh kkk kks kkt ksa ksb ksc ksh ksk kss kst kta ktb ktc kth ktk kts ktt saa sab sac sah sak sas sat sba sbb sbc sbh sbk sbs sbt sca scb scc sch sck scs sct sh- sha shb shc shh shk shs sht sk- ska skb skc skh skk sks skt ss- ssa ssb ssc ssh ssk sss sst sta stb stc sth stk sts stt taa tab tac tah tak tas tat tba tbb tbc tbh tbk tbs tbt tca tcb tcc tch tck tcs tct th- tha thb thc thh thk ths tht tka tkb tkc tkk tks tkt tsa tsb tsc tsh tsk tss tst tta ttb ttc tth ttk tts ttt

a-ak a-ha aaaa aaab aaac aaah aaas aaba aabb aabc aabh aabt aaca aacb aacc aach aack aacs aact aaha aahk aahs aaka aasa aasc aass aast aata aatc aatk aatt abaa abab abac abak abas abat abb- abba abbb abbs abbt abca abcb abcc abch abcs abct abha abhs abs- absa abss abta abts ac-t acaa acab acac acas acat acba acca accc acch accs acct acha achh achs acht acks acsa acsc acss acst acta actc acth acts actt ahab ahac ahah ahas ahat ahha ahhs ahsa ahss ahta ahts akaa akah akas akca akha akhs akka aksa akst asaa asab asac asah asak asas asat asba asc- asca ascb ascc asch asct asha ashk ashs asht aska asks askt assa assc assh assk asss asst asta astb astc asts at-t ataa atab atac atak atas atat atbs atca atcc atch atck atcs atha aths atka atkt atsb atsc atst atta atts baaa baah baak baas baat baba babb babs bac- baca bacc bach back bacs bact baha bahs baht bak- baka bakh baks bakt basa basc bash bask bass bast bata batc bath bats batt bbas bbbb bbbs bbch bbhs bcaa bcas bcat bcbc bcbs bcca bccc bccs bchs bcsa bcsc bcss bctc bcts bhat bhca bhcc bhhs bkhs bsaa bsac bsas bsat bscs bshs bskt bssc bsts btaa btcc btcs bths btss bttb caaa caab caac caah caas caat caba cabs cac- caca cacc cach cack caha cahs caht caka casa casb casc cash cask cass cast cat- cata catb catc cath cats catt cbac cbat cbbc cbbs cbca cbcc cbcs cbct cbha cbhs cbka cbsa cbsc cbta cbtc ccaa ccab ccac ccas ccat ccba ccbc ccca cccb cccc cccs ccha cchs ccsa ccss ccst cctb cctc cctt chaa chab chac chah chak chas chat chca chch chcs chha chhs chka chkb chks chkt chsc chsh chst chtt ckac ckat ckbc ckch ckck ckcs ckhs cksa cksb cksh ckst cktb ckts csaa csab csac csak csas csat cscb cscc csch cscs cshs cska csks cssa csta cstc csts ctab ctba ctbs ctca cths ctsa ctsc ctss ctta ctts haab haak haas haat haba habs habt hack hacs haha hahs haht haka hakk haks hasa hasc hash hask hass hast hata hatb hath hats hatt hbbs hbhs hbss hcat hcbc hcbs hcca hccb hccc hcch hccs hchs hcsa hcsc hcss hcst hhaa hhat hhhh hhhs hkcc hkcs hkst hsac hsas hsat hsbc hscc hsct hshs hsts htab htcc hths htsc kaaa kaab kaak kaas kaat kaba kabb kabc kacb kacc kach kacs kact kaha kahc kahs kaht kaka kakc kakh kakk kaks kakt kas- kasa kasb kasc kash kask kass kast kat- kata katb katc kath katk kats katt kbaa kbab kbac kbak kbas kbat kbba kbbb kbbc kbbk kbbs kbbt kbca kbcb kbch kbck kbcs kbct kbhb kbhc kbhh kbhs kbht kbkb kbkk kbsa kbsb kbsk kbss kbst kbta kbtb kbtc kbtk kbts kbtt kcaa kcab kcac kcah kcas kcat kcba kcbc kcbk kcbs kcca kccb kccc kcck kcct kcha kchh kchk kchs kckc kckk kcsa kcsb kcsc kcss kcst kcta kctb kctc khab khac khak khas khat khbc khbs khbt khca khcb khcc khch khck khcs khct khhk khhs khka khkk khks khss khst khtb khth khtk khts khtt kkaa kkac kkat kkba kkbb kkbs kkbt kkcb kkch kkck kkcs kkct kkha kkhb kkhh kkhk kkkk kksa kkss kkst kktc kktk kkts ksab ksac ksah ksak ksas ksat ksba ksbc ksbh ksbs ksca kscb ksch ksck kscs ksha kshb kshk kshs kska kskb kskk ksks kssa ksss ksst ksta kstb kstc ksth kstk ksts kstt ktaa ktak ktas ktat ktba ktbb ktbc ktbt ktcc ktch ktck ktcs kthc kthh kthk kths ktht ktkb ktkc ktkk ktks ktkt ktsa ktsc ktst kttc ktth kttk ktts kttt sa-c saab saac saah saak saas saat saba sabb sabc sabs saca sacc sack sacs sact saha sahk sahs saht saka