a-ha aaaa aaab aaac aaah aaas aaba aabb aabc aabh aabt aaca aacb aacc aach aacs aact aaha aahs aasa aasc aass aast aata aatc aatt abaa abab abac 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 acsa acsc acss acst acta actc acth acts actt ahab ahac ahah ahas ahat ahha ahhs ahsa ahss ahta ahts asaa asab asac asah asas asat asba asc- asca ascb ascc asch asct asha ashs asht assa assc assh asss asst asta astb astc asts at-t ataa atab atac atas atat atbs atca atcc atch atcs atha aths atsb atsc atst atta atts baaa baah baas baat baba babb babs bac- baca bacc bach bacs bact baha bahs baht basa basc bash 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 bsaa bsac bsas bsat bscs bshs bssc bsts btaa btcc btcs bths btss bttb caaa caab caac caah caas caat caba cabs cac- caca cacc cach caha cahs caht casa casb casc cash cass cast cat- cata catb catc cath cats catt cbac cbat cbbc cbbs cbca cbcc cbcs cbct cbha cbhs 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 chas chat chca chch chcs chha chhs chsc chsh chst chtt csaa csab csac csas csat cscb cscc csch cscs cshs cssa csta cstc csts ctab ctba ctbs ctca cths ctsa ctsc ctss ctta ctts haab haas haat haba habs habt hacs haha hahs haht hasa hasc hash 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 hsac hsas hsat hsbc hscc hsct hshs hsts htab htcc hths htsc sa-c saab saac saah saas saat saba sabb sabc sabs saca sacc sacs sact saha sahs saht sasa sasc sash sass sast sata satb satc sats satt sbaa sbac sbas sbbs sbca sbcc sbcs sbct sbhc sbhs sbsa sbst sbtc scaa scab scac scas scat scba sccc sccs scct sch- scha schh schs scsa scsc scsh scst sctc scts shab shac shah shas shat shbs shbt shca shcc shha shhh shhs shsc shts ssaa ssab ssac ssas ssat ssca sscc sscs sshs sssa sssb sssc sssh ssss ssta sstb sstc ssth ssts stab stac stas stat stbc stbs stca stcc stch stcs sths stss sttc taa- taas taat taba tabb tabc tabs taca tacc tach tacs tact taha tahs tasa tasb tasc tash tass tast tata tatb tath tats tatt tbas tbbs tbca tbcb tbcc tbhs tbst tbta tcbs tcca tccc tch- tcha tchh tchs tcsh tctc tcts thaa thas that thbs thca thch thss thtb thts tsaa tsat tsbc tsca tscc tshb tshs tssa tsst tstc tsts ttab ttbb ttss tttt