a-ii aaaa aaab aaac aaad aaai aaap aaas aaba aabb aabc aabd aabi aabp aaca aacb aacc aacd aaci aacp aacs aada aadc aadi aads aaib aaic aaii aais aapa aapc aapi aaps aasa aasc aasd aasi aass abaa abab abac abad abai abap abas abb- abba abbb abbi abbs abca abcb abcc abcd abci abcp abcs abda abdi abia abib abic abid abis abpa abpc abpd abpi abpp abps abs- absa absd absi absp abss acaa acab acac acad acai acap acas acba acca accc accd acci accp accs acda acdb acdc acdi acdp acds aci- acia acic acid acip acis acpa acpd acpi acps acsa acsc acsd acsi acss adaa adab adac adad adai adap adas adba adbc adbi adcc adci adcs adda addc addd addi adds adia adib adic adip adis adp- adps adsa adsi adss aiai aias aiba aica aicc aicd aicp aics aida aidb aidc aidi aids aiia aiib aiic aiid aipa aipi aips aisa aisb aisd aisi apac apai apap apas apba apbs apca apcb apcc apcd apcs apda apdd apds api- apia apic apid apip apis appa appc appd apps apsa apsi apss asaa asab asac asad asai asap asas asba asc- asca ascb ascc asci ascp asda asds asia asic asii asip asis aspa aspc aspd aspi asps assa assc assd assi assp asss ba-i baaa baad baas baba babb babi babs bac- baca bacc baci bacs bada badb badd badi bads baia baib baic baid bais bapa bapc bapi bapp baps basa basc basi bass bbad bbas bbbb bbbs bbci bbdd bcaa bcap bcas bcbc bcbp bcbs bcca bccc bcci bccs bcda bcds bcia bcis bcpp bcps bcsa bcsc bcss bdbc bddc bdii bdpc bdsd biad biap bias biba bibb bibi bibs bica bicc bici bics bida bidi bids biis bipa bipp bips bis- bisa bisc bisd bisp biss bpai bpcp bpda bpsa bsaa bsac bsap bsas bsbd bsci bscp bscs bsic bspp bssc bssd c-cd caaa caab caac caap caas caba cabi cabs cac- caca cacc caci cada cadc cadd cadi cads caia caib caic caid caip cais capa capb capc capd capi capp caps casa casb casc casd casi casp cass cbac cbbc cbbs cbca cbcc cbcp cbcs cbdb cbdc cbdi cbds cbia cbid cbpc cbpp cbsa cbsc cbsi ccaa ccab ccac ccad ccai ccap ccas ccba ccbc ccca cccb cccc ccci cccp cccs ccdc ccdi ccdp ccds ccic ccid ccii ccip ccis ccpa ccpp ccps ccsa ccsd ccsi ccsp ccss cdaa cdac cdad cdai cdba cdcs cdda cddb cdic cdii cdis cdps cdss ciaa cias ciba cibc cibi cica cicc cici cics cida cidc cidi cidp cids ciia ciid ciii ciis cipa cipp cips cis- cisa cisc cisd cisp ciss cpaa cpac cpad cpap cpas cpbc cpca cpcs cpia cpic cppa cppd cpps cpsa cpsc csaa csab csac csas cscb cscc cscd csci cscs csda csdb csdp csia csib csid csis cspa cspb cspc cspd cspi csps cssa cssd daab daad daap daas daba dabb dabp dabs daca daci dacs dada dadi dads daia daid dais dapa dapi dapp daps dasa dasb dasc dasd dasi dass dbas dbcc dbcp dbcs dbpc dbpd dbsa dbss dcas dcbc dcca dccb dccc dcci dccp dccs dcdb dcds dcia dcii dcis dcps dcsc dcss dddd ddps ddss dia- diab diac diad diap dias diba dibb dibp dibs dica dici dida didi dids diii diis dipa dipc dipp dips dis- disa disc disd disi disp diss dpaa dpac dpbc dpci dpcp dppa dppc dpsd dsac dsap dsba dsbc dscc dscp dscs dsda dsdp dsip dsps dssa dssc dssi dssp iaaa iaac iaai iaap iaas iaba iaca iacc iacp iacs iadb iadc iaia iais iapa iapp iaps iasa iasc iasi iasp ibac ibad ibas ibca ibcs ibia ibid ibis ibsa ibss icaa icab icac icad icai icap icas icbc icbd icbp icbs icca iccb iccc icci iccp iccs icdc icdd icdp icis icpa icpc icpd icps icsa icsb icsc icsd icsi icsp icss idad idas idca idda idia idic idid idis idps idsa idsc idss iiac iias iica iicd iida iiii iiis iipa iisc iisd iisi iisp ipac ipad ipas ipba ipca ipcc ipcs ipdc ipdi ipid ippa ippc ipsa ipsc ipsi ipsp ipss is-a isac isad isai isas isba isbd isca iscc iscd isci iscp iscs isda isdb isdc isds isia isic isis ispa ispc isps issa issc issi issp isss paap paas paba paca pacd paci pacs pada padd padi pads paia paib paid paip pais papa papb papi papp paps pasa pasc pasd pasi pasp pass pbac pbcc pbpa pbsa pbsp pcaa pcad pcap pcas pcba pcbc pcbs pcca pccc pccs pcia pcip pcpb pcpp pcps pcsa pdac pdas pdbs pdca pdci pdcp pdic pdpa pdsa pdsd pdss piai pias pibb pibi pica picc pici pics pida pids piia piip pipa pipi pipp pips pisa pisd pisi piss ppac ppad ppap ppcc ppcd ppci ppcs ppds ppib ppic ppid pppa pppd pppp ppps ppss psac psap psas psbd psca psci psdc psdi psdp psds psia psid psip psis pspi pspp psps pssa pssc s-ib s-ic s-ii sa-c saab saac saad saap saas saba sabb sabc sabi sabs saca sacc sacd saci sacs sada sadb sadc sadd sadi sads saia saic said saip sais sapa sapi sapp saps sasa sasc sasd sasi sass sbaa sbac sbai sbas sbbs sbca sbcc sbcs sbds sbia sbic sbsa sbsd sbsi sbsp scaa scab scac scad scai scap scas scba scbi sccc sccp sccs scda scdc scdp scds sci- scia scic scid scip scis scpa scpb scpi scps scsa scsc scsd scsi sdap sdba sdcc sddc sdds sdib sdic sdps sdsc sdss siaa siab siac siai sias siba sibc sibi sibs sica sicc sici sicp sics sida sidd sidi sids sipa sipc sipi sipp sips sisa sisc sisd sisi siss sp-a spac spad spap spas spca spcc spcs spdc spdp spia spib spic spip spis sppd spps spsa spsd spsp spss ssaa ssab ssac ssap ssas ssca sscc ssci sscp sscs ssdc ssdd ssdp ssid ssis