a-ii aaaa aaab aaac aaai aaar aaas aaba aabb aabc aabi aabt aaca aacb aacc aaci aacr aacs aact aaib aaic aaii aais aara aarc aari aars aart aasa aasc aasi aass aast aata aatc aatt abaa abab abac abai abar abas abat abb- abba abbb abbi abbr abbs abbt abca abcb abcc abci abcr abcs abct abia abib abic abir abis abit abra abrc abri abrs abs- absa absi abss abta abts ac-t acaa acab acac acai acar acas acat acba acca accc acci accs acct aci- acia acic acir acis acr- acra acrc acri acrr acrs acsa acsc acsi acss acst acta actc acti acts actt aiai aias aiba aica aicc aicr aics aiia aiib aiic aiir aira airi airs airt aisa aisb aisi aisr aist aita aiti aitr aits aitt arab arac arai arar aras arat arba arbi arbs arc- arca arci arcs arct aria arib arii aris arit arr- arra arrc arri arrr arrs arrt ars- arsa arsc arsi arst arta artc arti artr arts asaa asab asac asai asar asas asat asba asc- asca ascb ascc asci ascr asct asia asic asii asir asis asit asra asrc asrs assa assc assi assr asss asst asta astb astc asti astr asts at-t ataa atab atac atai atar atas atat atbs atca atcc atcr atcs atia atic atis atit atra atrc atri atsb atsc atsi atst atta atti attr atts ba-i baaa baar baas baat baba babb babi babr babs bac- baca bacc baci bacs bact baia baib baic bair bais bait bar- bara barb barc bari barr bars bart basa basc basi bass bast bata batc bati bats batt bbas bbbb bbbs bbci bbrc bcaa bcar bcas bcat bcbc bcbs bcca bccc bcci bccs bcia bcis bcit bcra bcrs bcsa bcsc bcss bctc bcts biar bias biat biba bibb bibi bibs bica bicc bici bics biis bira birb biri birr birs birt bis- bisa bisc biss bist bita bitc bits bitt brab brac brai bras brat brca brcb bria bric bris brit brrr brrs brsb brsr brst brtc bsaa bsac bsas bsat bsci bscs bsic bsra bssc bsts btaa btcc btcs btrc btrt btss bttb caaa caab caac caas caat caba cabi cabs cac- caca cacc caci cacr caia caib caic cair cais cait cara carb carc cari carr cars cart casa casb casc casi casr cass cast cat- cata catb catc cati cats catt cbac cbar cbat cbbc cbbs cbca cbcc cbcr cbcs cbct cbia cbir cbit cbrt cbsa cbsc cbsi cbta cbtc ccaa ccab ccac ccai ccar ccas ccat ccba ccbc ccca cccb cccc ccci cccs ccic ccii ccir ccis ccra ccrc ccri ccrs ccrt ccsa ccsi ccss ccst cctb cctc cctt ciaa ciar cias ciat ciba cibc cibi cica cicc cici cicr cics cict ciia ciii ciis ciit cira cirb circ ciri cirr cirs cirt cis- cisa cisc cisr ciss cist cita citb citi cits citt crab crac crai crar cras crat crbc crca crcc crcr cria crib cric cris crit crrt crsa crss crst crtc crts csaa csab csac csar csas csat cscb cscc csci cscr cscs csia csib csir csis csit csra csrc csrs cssa cssr csta cstc cstr csts ctab ctba ctbi ctbs ctca ctia ctic ctrc ctrs ctsa ctsc ctss ctta ctts iaaa iaac iaai iaas iaat iaba iaca iacc iacr iacs iact iaia iais iara iarc iars iart iasa iasc iasi iasr iata iatc iati ibac ibar ibas ibat ibca ibcs ibia ibis ibra ibrc ibri ibsa ibss ibtb ibtc ibts icaa icab icac icai icar icas icat icbc icbs icca iccb iccc icci iccr iccs icct icis icra icrc icrr icrs icrt icsa icsb icsc icsi icsr icss icst icta icts iiac iias iica iiii iiis iiit iira iirc iirs iisc iisi iisr iist iita iitr iitt irac irai irar iras irca ircc ircs iri- iria iric iris irra irrc irri irrs irsa irta irti irts is-a isac isai isar isas isat isba isbt isca iscc isci iscr iscs isct isia isic isis isit isra isri issa issc issi issr isss ista istc isti istr ists itaa itac itai itar itas itat itbs itcs itia itic itis itra itri itrs itsa itsi itta raab raas raat raba rabb rabi rabs rac- raca racc raci racs ract raia raic raii rair rais rait rara rarb rari rars rasa rasc rasi rass rast rata rati rats ratt rbbb rbbr rbbs rbis rbss rbst rcac rcas rcbc rccb rccc rccs rcic rcis rcsa rcsc rcsi rcss rctc rcti rcts riaa riab riai rias riat rib- riba ribs rica ricc rics rict riia riis riri rirs risa risc risi riss rist rita riti rits ritt rras rrat rrrr rsaa rsai rsbi rscc rscs rsis rssa rsts rtai rtas rtca rtcc rtss rtts s-ib s-ic s-ii sa-c saab saac saar saas saat saba sabb sabc sabi sabr sabs saca sacc saci sacr sacs sact saia saic sair sais sait sara sarc sari sarr sars sart sasa sasc sasi sass sast sata satb satc sati satr sats satt sbaa sbac sbai sbar sbas sbbs sbca sbcc sbcs sbct sbia sbic sbsa sbsi sbst sbtc scaa scab scac scai scar scas scat scba scbi sccc sccs scct sci- scia scic scir scis scit scr- scra scrc scri scrs scsa scsc scsi scsr scst sctc sctr scts siaa siab siac siai sias siat siba sibc sibi sibs sica sicc sici sics siit sira sirc siri sirr sirs sirt sisa sisc sisi siss sist sit- sita sitc siti sits sitt sras srbc srcc srct srib sris srta srtr ssaa ssab ssac ssas ssat ssbr ssca sscc ssci sscs ssis ssit ssra ssrc ssri ssrs sssa sssb sssc sssi ssss ssta sstb sstc ssts stab stac stai star stas stat stbc stbs stca stcc stcs stia stib stic stir stis stit stra strc stri strs stsi stss sttc sttr taa- taar taas taat taba tabb tabc tabi tabs taca tacc taci tacs tact taia tair tais tait tara tarb tarc tari tarr tars tart tasa tasb tasc