a-ii aaaa aaab aaac aaad aaai aaar aaas aaba aabb aabc aabd aabi aaca aacb aacc aacd aaci aacr aacs aada aadc aadi aads aaib aaic aaii aais aara aarc aard aari aars aasa aasc aasd aasi aass abaa abab abac abad abai abar abas abb- abba abbb abbi abbr abbs abca abcb abcc abcd abci abcr abcs abda abdi abia abib abic abid abir abis abra abrc abri abrs abs- absa absd absi abss acaa acab acac acad acai acar acas acba acca accc accd acci accs acda acdb acdc acdi acds aci- acia acic acid acir acis acr- acra acrc acri acrr acrs acsa acsc acsd acsi acss adaa adab adac adad adai adar adas adba adbc adbi adcc adci adcs adda addc addd addi addr adds adia adib adic adir adis adra adrs adsa adsi adsr adss aiai aias aiba aica aicc aicd aicr aics aida aidb aidc aidi aidr aids aiia aiib aiic aiid aiir aira aird airi airs aisa aisb aisd aisi aisr arab arac arad arai arar aras arba arbi arbs arc- arca arci arcs arda ardc ardi ards aria arib arid arii aris arr- arra arrc arri arrr arrs ars- arsa arsc arsd arsi asaa asab asac asad asai asar asas asba asc- asca ascb ascc asci ascr asda asds asia asic asii asir asis asra asrc asrs assa assc assd assi assr asss ba-i baaa baad baar baas baba babb babi babr babs bac- baca bacc baci bacs bada badb badd badi badr bads baia baib baic baid bair bais bar- bara barb barc bard bari barr bars basa basc basi bass bbad bbas bbbb bbbs bbci bbdd bbrc bcaa bcar bcas bcbc bcbs bcca bccc bcci bccs bcda bcds bcia bcis bcra bcrs bcsa bcsc bcss bd-r bdbc bddc bdii bdsd biad biar bias biba bibb bibi bibs bica bicc bici bics bida bidi bidr bids biis bira birb bird biri birr birs bis- bisa bisc bisd biss brab brac brad brai bras brca brcb brda brds bria bric brid bris brrr brrs brsb brsr bsaa bsac bsas bsbd bsci bscs bsic bsra bsrd bssc bssd c-cd caaa caab caac caas caba cabi cabs cac- caca cacc caci cacr cada cadc cadd cadi cadr cads caia caib caic caid cair cais cara carb carc card cari carr cars casa casb casc casd casi casr cass cbac cbar cbbc cbbs cbca cbcc cbcr cbcs cbdb cbdc cbdi cbds cbia cbid cbir cbrd cbsa cbsc cbsi ccaa ccab ccac ccad ccai ccar ccas ccba ccbc ccca cccb cccc ccci cccs ccdc ccdi ccdr ccds ccic ccid ccii ccir ccis ccra ccrc ccri ccrs ccsa ccsd ccsi ccss cd-r cdaa cdac cdad cdai cdba cdcs cdda cddb cddr cdic cdii cdis cdrs cdss ciaa ciar cias ciba cibc cibi cica cicc cici cicr cics cida cidc cidi cidr cids ciia ciid ciii ciis cira cirb circ ciri cirr cirs cis- cisa cisc cisd cisr ciss crab crac crai crar cras crbc crca crcc crcr crda crdc cria crib cric cris crsa crss csaa csab csac csar csas cscb cscc cscd csci cscr cscs csda csdb csdr csia csib csid csir csis csra csrc csrd csrs cssa cssd cssr daab daad daar daas daba dabb dabs daca daci dacs dada dadi dads daia daid dair dais dara darb darc dard dari darr dars dasa dasb dasc dasd dasi dass dbar dbas dbcc dbcs dbrs dbsa dbss dcas dcbc dcca dccb dccc dcci dccs dcdb dcds dcia dcii dcis dcra dcsc dcss dddd ddrc ddss dia- diab diac diad diar dias diba dibb dibs dica dici dida didi dids diii diis dira dird dirr dirs dis- disa disc disd disi diss draa drab drac drad drar dras drba drbc drca drda drib dric drra drrs drsa dsac dsba dsbc dscc dscr dscs dsda dsdr dsrc dsri dsrr dssa dssc dssi iaaa iaac iaai iaas iaba iaca iacc iacr iacs iadb iadc iaia iais iara iarc iars iasa iasc iasi iasr ibac ibad ibar ibas ibca ibcs ibia ibid ibis ibra ibrc ibrd ibri ibsa ibss icaa icab icac icad icai icar icas icbc icbd icbs icca iccb iccc icci iccr iccs icdc icdd icis icra icrc icrr icrs icsa icsb icsc icsd icsi icsr icss idad idar idas idca idcr idda idia idic idid idir idis idra idrc idsa idsc idss iiac iias iica iicd iida iiii iiis iira iirc iirs iisc iisd iisi iisr irac irad irai irar iras irca ircc ircd ircs irda irdc irds iri- iria iric irid iris irra irrc irri irrs irsa is-a isac isad isai isar isas isba isbd isca iscc iscd isci iscr iscs isda isdb isdc isds isia isic isis isra isri issa issc issi issr isss raab raad raas raba rabb rabi rabs rac- raca racc raci racs rada radc radd radr rads raia raic raid raii rair rais rara rarb rari rars rasa rasc rasd rasi rass rbbb rbbr rbbs rbds rbis rbsd rbss rcac rcas rcbc rccb rccc rccs rcdc rcds rcic rcid rcis rcrd rcsa rcsc rcsd rcsi rcss rdac rdas riaa riab riad riai rias rib- riba ribs rica ricc rics rida ridc ridd ridi rids riia riis riri rirs risa risc risd risi riss rrad rras rrrr rsaa rsai rsbi rscc rscs rsdd rsds rsid rsis rssa s-ib s-ic s-ii sa-c saab saac saad saar saas saba sabb sabc sabi sabr sabs saca sacc sacd saci sacr sacs sada sadb sadc sadd sadi sadr sads saia saic said sair sais sara sarc sard sari sarr sars sasa sasc sasd sasi sass sbaa sbac sbai sbar sbas sbbs sbca sbcc sbcs sbds sbia sbic sbsa sbsd sbsi scaa scab scac scad scai scar scas scba scbi sccc sccs scda scdc scds sci- scia scic scid scir scis scr- scra scrc scri scrs scsa scsc scsd scsi scsr sdba sdcc sddc sdds sdib sdic sdrc sdrs sdsc sdss siaa siab siac siai sias siba sibc sibi sibs sica sicc sici sics sida sidd sidi