a-ii aaaa aaab aaac aaai aaap aaar aaas aaba aabb aabc aabi aabp aabt aaca aacb aacc aaci aacp aacr aacs aact aaib aaic aaii aais aapa aapc aapi aaps aapt aara aarc aari aarp aars aart aasa aasc aasi aass aast aata aatc aatt abaa abab abac abai abap abar abas abat abb- abba abbb abbi abbr abbs abbt abca abcb abcc abci abcp abcr abcs abct abia abib abic abir abis abit abpa abpc abpi abpp abpr abps abra abrc abri abrs abs- absa absi absp abss abta abts ac-t acaa acab acac acai acap acar acas acat acba acca accc acci accp accs acct aci- acia acic acip acir acis acpa acpi acpr acps acpt acr- acra acrc acri acrr acrs acsa acsc acsi acss acst acta actc acti acts actt aiai aias aiba aica aicc aicp aicr aics aiia aiib aiic aiir aipa aipi aips aira airi airp airs airt aisa aisb aisi aisr aist aita aiti aitr aits aitt apac apai apap apar apas apat apba apbr apbs apca apcb apcc apcr apcs api- apia apic apip apis apit appa appc appr apps appt apra aprc apri aprs aprt apsa apsi apss apta aptc apti apts aptt arab arac arai arap arar aras arat arba arbi arbs arc- arca arci arcs arct aria arib arii arip aris arit arpa arpi arps arr- arra arrc arri arrr arrs arrt ars- arsa arsc arsi arst arta artc arti artr arts asaa asab asac asai asap asar asas asat asba asc- asca ascb ascc asci ascp ascr asct asia asic asii asip asir asis asit aspa aspc aspi aspr asps aspt asra asrc asrs assa assc assi assp assr asss asst asta astb astc asti astp astr asts at-t ataa atab atac atai atap atar atas atat atbs atca atcc atcr atcs atia atic atip atis atit atpr atra atrc atri atrp atsb atsc atsi atst atta atti attp 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 bapa bapc bapi bapp baps bapt bar- bara barb barc bari barr bars bart basa basc basi bass bast bata batc bati bats batt bbas bbbb bbbs bbci bbpr bbrc bcaa bcap bcar bcas bcat bcbc bcbp bcbs bcca bccc bcci bccs bcia bcis bcit bcpp bcps bcra bcrs bcsa bcsc bcss bctc bcts biap biar bias biat biba bibb bibi bibs bica bicc bici bics biis bipa bipp bips bira birb biri birr birs birt bis- bisa bisc bisp biss bist bita bitc bits bitt bpai bpcp bprc bpsa bpti brab brac brai bras brat brca brcb bria bric bris brit brrr brrs brsb brsr brst brtc bsaa bsac bsap bsas bsat bsci bscp bscs bsic bspp bspr bsra bssc bsts btaa btbp btcc btcs btps btrc btrt btss bttb caaa caab caac caap caas caat caba cabi cabs cac- caca cacc caci cacr caia caib caic caip cair cais cait capa capb capc capi capp caps capt cara carb carc cari carp carr cars cart casa casb casc casi casp casr cass cast cat- cata catb catc cati cats catt cbac cbar cbat cbbc cbbs cbca cbcc cbcp cbcr cbcs cbct cbia cbir cbit cbpc cbpp cbrt cbsa cbsc cbsi cbta cbtc ccaa ccab ccac ccai ccap ccar ccas ccat ccba ccbc ccca cccb cccc ccci cccp cccs ccic ccii ccip ccir ccis ccpa ccpp ccpr ccps ccra ccrc ccri ccrp ccrs ccrt ccsa ccsi ccsp ccss ccst cctb cctc cctt ciaa ciar cias ciat ciba cibc cibi cica cicc cici cicr cics cict ciia ciii ciis ciit cipa cipp cips cira cirb circ ciri cirr cirs cirt cis- cisa cisc cisp cisr ciss cist cita citb citi citp cits citt cpaa cpac cpap cpas cpbc cpca cpcs cpia cpic cppa cpps cpri cprs cprt cpsa cpsc cpsr cptp cptr cpts crab crac crai crap crar cras crat crbc crca crcc crcr cria crib cric crip cris crit crpc crps crrt crsa crsp crss crst crtc crtp crts csaa csab csac csar csas csat cscb cscc csci cscr cscs csia csib csir csis csit cspa cspb cspc cspi csps cspt csra csrc csrs cssa cssr csta cstc cstr csts ctab ctba ctbi ctbs ctca ctcp ctia ctic ctpp ctps ctrc ctrp ctrs ctsa ctsc ctss ctta ctts iaaa iaac iaai iaap iaas iaat iaba iaca iacc iacp iacr iacs iact iaia iais iapa iapp iaps iapt iara iarc iars iart iasa iasc iasi iasp iasr iata iatc iati ibac ibar ibas ibat ibca ibcs ibia ibis ibra ibrc ibri ibsa ibss ibtb ibtc ibts icaa icab icac icai icap icar icas icat icbc icbp icbs icca iccb iccc icci iccp iccr iccs icct icis icpa icpc icps icra icrc icrr icrs icrt icsa icsb icsc icsi icsp icsr icss icst icta ictp icts iiac iias iica iiii iiis iiit iipa iira iirc iirs iisc iisi iisp iisr iist iita iitr iitt ipac ipas ipat ipba ipca ipcc ipcs ipct ippa ippc ippr ipri ipsa ipsc ipsi ipsp ipss ipta iptc ipts irac irai irap irar iras irbp irca ircc ircs iri- iria iric irip iris irpa irpc irps irra irrc irri irrs irsa irsp irta irti irtp irts is-a isac isai isar isas isat isba isbt isca iscc isci iscp iscr iscs isct isia isic isis isit ispa ispc ispr isps isra isri isrp issa issc issi issp issr isss ista istc isti istp istr ists itaa itac itai itap itar itas itat itbs itcs itia itic itis itpa itpc itra itri itrs itsa itsi itsp itta paap paar paas paat paba pabt paca paci pacs pact paia paib paip pair pais pait papa papb papi papp papr paps par- para parc pari parp parr pars part pasa pasc pasi pasp pass past pata pati patr pats patt pbac pbar pbcc pbpa pbrs pbsa pbsp pcaa pcap pcas pcba pcbc pcbs pcca pccc pccs pcia pcip pcpb pcpp pcps pcra pcrc pcsa pcts