a-ii aaaa aaab aaac aaai aaas aaba aabb aabc aabi aabt aaca aacb aacc aaci aacs aact aaib aaic aaii aais aasa aasc aasi aass aast aata aatc aatt abaa abab abac abag abai abas abat abb- abba abbb abbi abbs abbt abca abcb abcc abci abcs abct abia abib abic abig abis abit abs- absa absi abss abta abts ac-t acaa acab acac acag acai acas acat acba acca accc acci accs acct acga acgi acgs aci- acia acic acis acsa acsc acsi acss acst acta actc actg acti acts actt agac agag agai agas agat agba agca agcc agct agga aggi agia agib agic agig agii agis agit agsa agsg agst agta agts aiai aias aiba aica aicc aics aiga aiia aiib aiic aisa aisb aisg aisi aist aita aiti aits aitt asaa asab asac asag asai asas asat asba asc- asca ascb ascc asci asct asgt asia asic asii asis asit assa assc assi asss asst asta astb astc asti asts at-t ataa atab atac atai atas atat atbs atca atcc atcs atia atic atis atit atsb atsc atsi atst atta atti atts ba-i baaa baas baat baba babb babi babs bac- baca bacc baci bacs bact baga bagg bagi bags bagt baia baib baic baig bais bait basa basc basi bass bast bata batc bati bats batt bbas bbbb bbbs bbci bbga bcaa bcas bcat bcbc bcbg bcbs bcca bccc bcci bccs bcgs bcia bcis bcit bcsa bcsc bcss bctc bcts bgca bggs bgia bgst bias biat biba bibb bibi bibs bica bicc bicg bici bics biga bigb bigc bigg bigs bigt biis bis- bisa bisc biss bist bita bitc bits bitt bsaa bsac bsas bsat bsci bscs bsgs bsic bssc bsts btaa btcc btcs btss bttb caaa caab caac caas caat caba cabg cabi cabs cac- caca cacc caci caga cagg cagi cags caia caib caic cais cait casa casb casc casi cass cast cat- cata catb catc cati cats catt cbac cbat cbbc cbbs cbca cbcc cbcs cbct cbga cbgb cbia cbit cbsa cbsc cbsi cbta cbtc ccaa ccab ccac ccag ccai ccas ccat ccba ccbc ccca cccb cccc ccci cccs ccga ccgc ccgs ccgt ccic ccii ccis ccsa ccsg ccsi ccss ccst cctb cctc cctt cgac cgas cgcc cgcg cggs cgis cgsb cgss cgst ciaa cias ciat ciba cibc cibi cica cicc cici cics cict ciga cigi cigs ciia ciii ciis ciit cis- cisa cisc ciss cist cita citb citg citi cits citt csaa csab csac csas csat cscb cscc csci cscs csia csib csis csit cssa csta cstc cstg csts ctab ctag ctba ctbi ctbs ctca ctia ctic ctsa ctsc ctss ctta ctts gaas gaba gabb gabi gabs gabt gaga gagg gagi gags gaia gaig gais gait gasa gasb gasc gasi gass gast gata gatc gati gats gatt gbag gbas gbbs gc-c gcaa gcat gcbc gccc gccs gcic gcii gcss gcst gctc gcts ggbt gggg ggss giaa giac giai gias giat giba gibb gibs gica giga gigg gigi gigs giis gisa giss gist gita gits gsab gsat gsis gtaa gtcs gtta iaaa iaac iaai iaas iaat iaba iaca iacc iacs iact iags iaia iais iasa iasc iasi iata iatc iati ibac ibas ibat ibca ibcs ibga ibia ibis ibsa ibss ibtb ibtc ibts icaa icab icac icag icai icas icat icbc icbs icca iccb iccc icci iccs icct icga icgc icis icsa icsb icsc icsi icss icst icta icts igac igas igba igbc igcc igga iggs igia igis iiac iias iica iiii iiis iiit iisc iisi iist iita iitt is-a isac isai isas isat isba isbt isca iscc isci iscs isct isgc isia isic isis isit issa issc issi isss ista istc isti ists itaa itac itai itas itat itbs itcs itgc itgs itia itic itis itsa itsi itta s-ib s-ic s-ii sa-c saab saac saag saas saat saba sabb sabc sabi sabs saca sacc saci sacs sact saga sagg sagi sags sagt saia saic sais sait sasa sasc sasi sass sast sata satb satc satg sati sats satt sbaa sbac sbai sbas sbbs sbca sbcc sbcs sbct sbia sbic sbig sbsa sbsi sbst sbtc scaa scab scac scag scai scas scat scba scbi sccc sccs scct scgs sci- scia scic scis scit scsa scsc scsi scst sctc scts sgaa sgac sgca sgcb sgcg sggg sggs sgic sgss sgta sgts siaa siab siac siag siai sias siat siba sibc sibi sibs sica sicc sici sics siga sigg sigi sigs siit sisa sisc sisi siss sist sit- sita sitc siti sits sitt ssaa ssab ssac ssas ssat ssca sscc ssci sscs ssgs ssgt ssis ssit sssa sssb sssc sssi ssss ssta sstb sstc ssts stab stac stag stai stas stat stbc stbs stca stcc stcs stia stib stic stig stis stit stsi stss sttc taa- taag taas taat taba tabb tabc tabi tabs taca tacc taci tacs tact taga tagg tagi tags taia taig tais tait tasa tasb tasc tasi tass tast tata tatb tati tats tatt tbas tbbs tbca tbcb tbcc tbgs tbit tbst tbta tcbs tcca tccc tcga tctc tcts tgcc tgtc tgts tiaa tiab tias tiba tibi tibs tica ticc tics tiga tigi tigs tiit tisa tisb tisi tiss tist tita titc titi tits titt tsaa tsai tsat tsbc tsca tscc tscg tsgt tsia tsig tsis tssa tssg tssi tsst tstc tsts ttab ttbb ttss tttt