a-ii aaaa aaab aaac aaai aaap aaas aaba aabb aabc aabi aabp aabt aaca aacb aacc aaci aacp aacs aact aaib aaic aaii aais aapa aapc aapi aaps aapt aasa aasc aasi aass aast aata aatc aatt abaa abab abac abai abap abas abat abb- abba abbb abbi abbs abbt abca abcb abcc abci abcp abcs abct abia abib abic abis abit abpa abpc abpi abpp abps abs- absa absi absp abss abta abts ac-t acaa acab acac acai acap acas acat acba acca accc acci accp accs acct aci- acia acic acip acis acpa acpi acps acpt acsa acsc acsi acss acst acta actc acti acts actt aiai aias aiba aica aicc aicp aics aiia aiib aiic aipa aipi aips aisa aisb aisi aist aita aiti aits aitt apac apai apap apas apat apba apbs apca apcb apcc apcs api- apia apic apip apis apit appa appc apps appt apsa apsi apss apta aptc apti apts aptt asaa asab asac asai asap asas asat asba asc- asca ascb ascc asci ascp asct asia asic asii asip asis asit aspa aspc aspi asps aspt assa assc assi assp asss asst asta astb astc asti astp asts at-t ataa atab atac atai atap atas atat atbs atca atcc atcs atia atic atip atis atit atsb atsc atsi atst atta atti attp atts ba-i baaa baas baat baba babb babi babs bac- baca bacc baci bacs bact baia baib baic bais bait bapa bapc bapi bapp baps bapt basa basc basi bass bast bata batc bati bats batt bbas bbbb bbbs bbci bcaa bcap bcas bcat bcbc bcbp bcbs bcca bccc bcci bccs bcia bcis bcit bcpp bcps bcsa bcsc bcss bctc bcts biap bias biat biba bibb bibi bibs bica bicc bici bics biis bipa bipp bips bis- bisa bisc bisp biss bist bita bitc bits bitt bpai bpcp bpsa bpti bsaa bsac bsap bsas bsat bsci bscp bscs bsic bspp bssc bsts btaa btbp btcc btcs btps btss bttb caaa caab caac caap caas caat caba cabi cabs cac- caca cacc caci caia caib caic caip cais cait capa capb capc capi capp caps capt casa casb casc casi casp cass cast cat- cata catb catc cati cats catt cbac cbat cbbc cbbs cbca cbcc cbcp cbcs cbct cbia cbit cbpc cbpp cbsa cbsc cbsi cbta cbtc ccaa ccab ccac ccai ccap ccas ccat ccba ccbc ccca cccb cccc ccci cccp cccs ccic ccii ccip ccis ccpa ccpp ccps ccsa ccsi ccsp ccss ccst cctb cctc cctt ciaa cias ciat ciba cibc cibi cica cicc cici cics cict ciia ciii ciis ciit cipa cipp cips cis- cisa cisc cisp ciss cist cita citb citi citp cits citt cpaa cpac cpap cpas cpbc cpca cpcs cpia cpic cppa cpps cpsa cpsc cptp cpts csaa csab csac csas csat cscb cscc csci cscs csia csib csis csit cspa cspb cspc cspi csps cspt cssa csta cstc csts ctab ctba ctbi ctbs ctca ctcp ctia ctic ctpp ctps ctsa ctsc ctss ctta ctts iaaa iaac iaai iaap iaas iaat iaba iaca iacc iacp iacs iact iaia iais iapa iapp iaps iapt iasa iasc iasi iasp iata iatc iati ibac ibas ibat ibca ibcs ibia ibis ibsa ibss ibtb ibtc ibts icaa icab icac icai icap icas icat icbc icbp icbs icca iccb iccc icci iccp iccs icct icis icpa icpc icps icsa icsb icsc icsi icsp icss icst icta ictp icts iiac iias iica iiii iiis iiit iipa iisc iisi iisp iist iita iitt ipac ipas ipat ipba ipca ipcc ipcs ipct ippa ippc ipsa ipsc ipsi ipsp ipss ipta iptc ipts is-a isac isai isas isat isba isbt isca iscc isci iscp iscs isct isia isic isis isit ispa ispc isps issa issc issi issp isss ista istc isti istp ists itaa itac itai itap itas itat itbs itcs itia itic itis itpa itpc itsa itsi itsp itta paap paas paat paba pabt paca paci pacs pact paia paib paip pais pait papa papb papi papp paps pasa pasc pasi pasp pass past pata pati pats patt pbac pbcc pbpa pbsa pbsp pcaa pcap pcas pcba pcbc pcbs pcca pccc pccs pcia pcip pcpb pcpp pcps pcsa pcts piai pias piat pibb pibi pica picc pici pics pict piia piip pipa pipi pipp pips pisa pisi piss pist pita piti pits pitt ppac ppap ppcc ppci ppcs ppib ppic pppa pppp ppps ppss ppta ppts pptt psac psap psas psat psbt psca psci psia psip psis pspi pspp psps pssa pssc psst psts ptab ptas ptca ptcc ptsa pttc s-ib s-ic s-ii sa-c saab saac saap saas saat saba sabb sabc sabi sabs saca sacc saci sacs sact saia saic saip sais sait sapa sapi sapp saps sasa sasc sasi sass sast sata satb satc sati sats satt sbaa sbac sbai sbas sbbs sbca sbcc sbcs sbct sbia sbic sbsa sbsi sbsp sbst sbtc scaa scab scac scai scap scas scat scba scbi sccc sccp sccs scct sci- scia scic scip scis scit scpa scpb scpi scps scpt scsa scsc scsi scst sctc scts siaa siab siac siai sias siat siba sibc sibi sibs sica sicc sici sicp sics siit sipa sipc sipi sipp sips sipt sisa sisc sisi siss sist sit- sita sitc siti sits sitt sp-a spac spap spas spat spca spcc spcs spia spib spic spip spis spit spps spsa spsp spss spst spta sptb sptc spts ssaa ssab ssac ssap ssas ssat ssca sscc ssci sscp sscs ssis ssit sspa sspc ssps sspt sssa sssb sssc sssi ssss ssta sstb sstc sstp ssts stab stac stai stap stas stat stbc stbs stca stcc stcp stcs stia stib stic stip stis stit stpp stps stsi stss sttc taa- taas taat taba tabb tabc tabi tabs taca tacc taci tacs tact taia taip tais tait tapa tapi tapp taps tapt tasa tasb tasc tasi tasp tass tast tata tatb tati tats tatt tbas tbbs tbca tbcb tbcc tbit tbsp tbst tbta tbtp tcap tcbs tcca tccc tcpa tctc tcts tiaa