a-ii aaaa aaab aaac aaad aaai aaas aaba aabb aabc aabd aabi aabt aaca aacb aacc aacd aaci aacs aact aada aadc aadi aads aadt aaib aaic aaii aais aasa aasc aasd aasi aass aast aata aatc aatt abaa abab abac abad abai abas abat abb- abba abbb abbi abbs abbt abca abcb abcc abcd abci abcs abct abda abdi abia abib abic abid abis abit abs- absa absd absi abss abta abts ac-t acaa acab acac acad acai acas acat acba acca accc accd acci accs acct acda acdb acdc acdi acds acdt aci- acia acic acid acis acsa acsc acsd acsi acss acst acta actc acti acts actt adaa adab adac adad adai adas adat adba adbc adbi adcc adci adcs adda addc addd addi adds adia adib adic adis adit adsa adsi adss adst adta adts aiai aias aiba aica aicc aicd aics aida aidb aidc aidi aids aidt aiia aiib aiic aiid aisa aisb aisd aisi aist aita aiti aits aitt asaa asab asac asad asai asas asat asba asc- asca ascb ascc asci asct asda asds asia asic asii asis asit assa assc assd assi asss asst asta astb astc asti asts at-t ataa atab atac atad atai atas atat atbs atca atcc atcs atdi atdt atia atic atid atis atit atsb atsc atsi atst atta atti atts ba-i baaa baad baas baat baba babb babi babs bac- baca bacc baci bacs bact bada badb badd badi bads baia baib baic baid bais bait basa basc basi bass bast bata batc bati bats batt bbad bbas bbbb bbbs bbci bbdd bcaa bcas bcat bcbc bcbs bcca bccc bcci bccs bcda bcds bcia bcis bcit bcsa bcsc bcss bctc bcts bdbc bddc bdii bdsd biad bias biat biba bibb bibi bibs bica bicc bici bics bida bidi bids biis bis- bisa bisc bisd biss bist bita bitc bitd bits bitt bsaa bsac bsas bsat bsbd bsci bscs bsic bssc bssd bsts btaa btcc btcs btdt btss bttb c-cd caaa caab caac caas caat caba cabi cabs cac- caca cacc caci cada cadc cadd cadi cads caia caib caic caid cais cait casa casb casc casd casi cass cast cat- cata catb catc catd cati cats catt cbac cbat cbbc cbbs cbca cbcc cbcs cbct cbdb cbdc cbdi cbds cbia cbid cbit cbsa cbsc cbsi cbta cbtc ccaa ccab ccac ccad ccai ccas ccat ccba ccbc ccca cccb cccc ccci cccs ccdc ccdi ccds ccic ccid ccii ccis ccsa ccsd ccsi ccss ccst cctb cctc cctt cdaa cdac cdad cdai cdba cdcs cdda cddb cdic cdii cdis cdss ciaa cias ciat ciba cibc cibi cica cicc cici cics cict cida cidc cidi cids cidt ciia ciid ciii ciis ciit cis- cisa cisc cisd ciss cist cita citb citi cits citt csaa csab csac csas csat cscb cscc cscd csci cscs csda csdb csia csib csid csis csit cssa cssd csta cstc cstd csts ctab ctba ctbi ctbs ctca ctia ctic ctsa ctsc ctss ctta ctts daab daad daas daba dabb dabs dabt daca daci dacs dact dada dadi dads daia daid dais dait dasa dasb dasc dasd dasi dass dast data dati dats datt dbas dbcc dbcs dbit dbsa dbss dbtt dcas dcbc dcca dccb dccc dcci dccs dcct dcdb dcds dcia dcii dcis dcsc dcss dctc dcts dddd ddss ddts dia- diab diac diad dias diat diba dibb dibs dica dici dict dida didi dids diii diis dis- disa disc disd disi diss dist dita diti dits ditt dsac dsba dsbc dscc dscs dsda dssa dssc dssi dsst dstc dsts dtaa dtac dtcc dtss iaaa iaac iaai iaas iaat iaba iaca iacc iacs iact iadb iadc iadt iaia iais iasa iasc iasi iata iatc iati ibac ibad ibas ibat ibca ibcs ibia ibid ibis ibsa ibss ibtb ibtc ibts icaa icab icac icad icai icas icat icbc icbd icbs icca iccb iccc icci iccs icct icdc icdd icis icsa icsb icsc icsd icsi icss icst icta icts idad idas idat idca idda idia idic idid idis idsa idsc idss idta idts iiac iias iica iicd iida iiii iiis iiit iisc iisd iisi iist iita iitt is-a isac isad isai isas isat isba isbd isbt isca iscc iscd isci iscs isct isda isdb isdc isds isia isic isis isit issa issc issi isss ista istc istd isti ists itaa itac itai itas itat itbs itcs itia itic itis itsa itsi itta s-ib s-ic s-ii sa-c saab saac saad saas saat saba sabb sabc sabi sabs saca sacc sacd saci sacs sact sada sadb sadc sadd sadi sads sadt saia saic said sais sait sasa sasc sasd sasi sass sast sata satb satc satd sati sats satt sbaa sbac sbai sbas sbbs sbca sbcc sbcs sbct sbds sbia sbic sbsa sbsd sbsi sbst sbtc scaa scab scac scad scai scas scat scba scbi sccc sccs scct scda scdc scds sci- scia scic scid scis scit scsa scsc scsd scsi scst sctc sctd scts sdba sdcc sddc sdds sdib sdic sdsc sdss siaa siab siac siai sias siat siba sibc sibi sibs sica sicc sici sics sida sidd sidi sids siit sisa sisc sisd sisi siss sist sit- sita sitc sitd siti sits sitt ssaa ssab ssac ssas ssat ssca sscc ssci sscs ssdc ssdd ssid ssis ssit sssa sssb sssc sssi ssss ssta sstb sstc sstd ssts stab stac stad stai stas stat stbc stbd stbs stca stcc stcs stds stia stib stic stid stis stit stsi stss sttc sttd taa- taas taat taba tabb tabc tabi tabs taca tacc taci tacs tact tada tads taia tais tait tasa tasb tasc tasi tass tast tata tatb tati tats tatt tbas tbbs tbca tbcb tbcc tbcd tbit tbst tbta tcad tcbs tcca tccc tcdd tctc tcts tdac tddb tdis tdss tiaa tiab tias tiba tibi tibs tica ticc tics tidc tidd tids tiit tisa tisb tisi tiss tist tita titc titi tits titt tsaa tsai tsat tsbc tsbd tsca tscc tsdb tsia tsid tsis tssa tssi tsst tstc tsts