-th a-a a-b a-c a-t aaa aab aac aah aar aas aat ab- aba abb abc abh abr abs abt ac- aca acb acc ach acr acs act aha ahb ahc ahh ahr ahs aht ar- ara arb arc arh arr ars art as- asa asb asc ash asr ass ast at- ata atb atc ath atr ats att baa bab bac bah bar bas bat bba bbb bbc bbh bbr bbs bbt bca bcb bcc bch bcr bcs bct bha bhb bhc bhh bhr bhs bht bra brb brh brr brs brt bsa bsb bsc bsh bsr bss bst bta btb btc bth btr bts btt c-- caa cab cac cah car cas cat cba cbb cbc cbh cbr cbs cbt cca ccb ccc cch ccr ccs cct ch- cha chb chc chh chr chs cht cra crb crc crh crr crs crt csa csb csc csh csr css cst cta ctb ctc cth ctr cts ctt haa hab hac hah har has hat hba hbb hbc hbh hbr hbs hbt hca hcb hcc hch hcr hcs hct hha hhb hhc hhh hhr hhs hht hr- hra hrb hrc hrh hrr hrs hrt hsa hsb hsc hsh hsr hss hst hta htb htc hth htr hts htt ra- raa rab rac rah rar ras rat rba rbb rbc rbh rbr rbs rbt rca rcb rcc rch rcr rcs rct rh- rha rhb rhc rhh rhr rhs rht rra rrb rrc rrh rrr rrs rrt rsa rsb rsc rsh rsr rss rst rta rtb rtc rtr rts rtt saa sab sac sah sar sas sat sba sbb sbc sbh sbr sbs sbt sca scb scc sch scr scs sct sh- sha shb shc shh shr shs sht sr- sra srb src srh srr srs srt ss- ssa ssb ssc ssh ssr sss sst sta stb stc sth str sts stt taa tab tac tah tar tas tat tba tbb tbc tbh tbr tbs tbt tca tcb tcc tch tcr tcs tct th- tha thb thc thh thr ths tht tra trb trc trh trr trs trt tsa tsb tsc tsh tsr tss tst tta ttb ttc tth ttr tts ttt

a-ha aaaa aaab aaac aaah aaar aaas aaba aabb aabc aabh aabt aaca aacb aacc aach aacr aacs aact aaha aahs aara aarc aars aart aasa aasc aass aast aata aatc aatt abaa abab abac abar abas abat abb- abba abbb abbr abbs abbt abca abcb abcc abch abcr abcs abct abha abhr abhs abra abrc abrs abs- absa abss abta abts ac-t acaa acab acac acar acas acat acba acca accc acch accs acct acha achh achr achs acht acr- acra acrc acrr acrs acsa acsc acss acst acta actc acth acts actt ahab ahac ahah ahar ahas ahat ahha ahhs ahra ahrc ahrr ahrs ahsa ahss ahta ahts arab arac arah arar aras arat arba arbh arbs arc- arca arch arcs arct arh- arhs arr- arra arrc arrh arrr arrs arrt ars- arsa arsc arst arta artc arth artr arts asaa asab asac asah asar asas asat asba asc- asca ascb ascc asch ascr asct asha ashs asht asra asrc asrs assa assc assh assr asss asst asta astb astc astr asts at-t ataa atab atac atar atas atat atbs atca atcc atch atcr atcs atha aths atra atrc atsb atsc atst atta attr atts baaa baah baar baas baat baba babb babr babs bac- baca bacc bach bacs bact baha bahr bahs baht bar- bara barb barc barh barr bars bart basa basc bash bass bast bata batc bath bats batt bbas bbbb bbbs bbch bbhs bbrc bcaa bcar bcas bcat bcbc bcbs bcca bccc bccs bchs bcra bcrs bcsa bcsc bcss bctc bcts bhar bhat bhca bhcc bhhs bhra bhrt brab brac brah bras brat brca brcb brhs brrr brrs brsb brsr brst brtc bsaa bsac bsas bsat bscs bshs bsra bssc bsts btaa btcc btcs bths btrc btrt btss bttb caaa caab caac caah caas caat caba cabs cac- caca cacc cach cacr caha cahs caht cara carb carc carr cars cart casa casb casc cash casr cass cast cat- cata catb catc cath cats catt cbac cbar cbat cbbc cbbs cbca cbcc cbcr cbcs cbct cbha cbhs cbrh cbrt cbsa cbsc cbta cbtc ccaa ccab ccac ccar ccas ccat ccba ccbc ccca cccb cccc cccs ccha cchr cchs ccra ccrc ccrs ccrt ccsa ccss ccst cctb cctc cctt chaa chab chac chah char chas chat chca chch chcs chha chhs chra chrb chrc chrr chrs chrt chsc chsh chsr chst chtr chtt crab crac crar cras crat crbc crca crcc crcr crhs crrt crsa crss crst crtc crts csaa csab csac csar csas csat cscb cscc csch cscr cscs cshs csra csrc csrs cssa cssr csta cstc cstr csts ctab ctba ctbs ctca cths ctrc ctrs ctsa ctsc ctss ctta ctts haab haar haas haat haba habs habt hacs haha hahs haht hara harc harh harr hars hart hasa hasc hash hass hast hata hatb hath hats hatt hbar hbbs hbhs hbrs hbss hcat hcbc hcbs hcca hccb hccc hcch hccs hchs hcsa hcsc hcss hcst hhaa hhat hhhh hhhs hrac hras hrhs hrrc hrta hrtb hsac hsas hsat hsbc hscc hsct hshs hsts htab htcc hths htra htsc httr raab raas raat raba rabb rabs rac- raca racc rach racs ract raha rahr rahs raht rara rarb rars rasa rasc rash rass rast rata rath rats ratt rbbb rbbr rbbs rbhs rbss rbst rcac rcas rcbc rccb rccc rccs rchb rchs rcsa rcsc rcss rctc rcts rhhs rrah rras rrat rrhs rrrr rsaa rscc rsch rscs rshs rssa rsts rtas rtca rtcc rths rtss rtts sa-c saab saac saah saar saas saat saba sabb sabc sabr sabs saca sacc sacr sacs sact saha sahr sahs saht sara sarc sarh sarr sars sart sasa sasc sash sass sast sata satb satc satr sats satt sbaa sbac sbar sbas sbbs sbca sbcc sbcs sbct sbhc sbhs sbsa sbst sbtc scaa scab scac scar scas scat