a-ii aaaa aaab aaac aaad aaai aaar aaba aabb aabc aabd aabi aabt aaca aacb aacc aacd aaci aacr aact aada aadc aadi aadt aaib aaic aaii aara aarc aard aari aart aata aatc aatt abaa abab abac abad abai abar abat abb- abba abbb abbi abbr abbt abca abcb abcc abcd abci abcr abct abda abdi abia abib abic abid abir abit abra abrc abri abta ac-t acaa acab acac acad acai acar acat acba acca accc accd acci acct acda acdb acdc acdi acdt aci- acia acic acid acir acr- acra acrc acri acrr acta actc acti actt adaa adab adac adad adai adar adat adba adbc adbi adcc adci adda addc addd addi addr adia adib adic adir adit adra adta aiai aiba aica aicc aicd aicr aida aidb aidc aidi aidr aidt aiia aiib aiic aiid aiir aira aird airi airt aita aiti aitr aitt arab arac arad arai arar arat arba arbi arc- arca arci arct arda ardc ardi aria arib arid arii arit arr- arra arrc arri arrr arrt arta artc arti artr at-t ataa atab atac atad atai atar atat atca atcc atcr atdi atdt atia atic atid atit atra atrc atri atta atti attr ba-i baaa baad baar baat baba babb babi babr bac- baca bacc baci bact bada badb badd badi badr baia baib baic baid bair bait bar- bara barb barc bard bari barr bart bata batc bati batt bbad bbbb bbci bbdd bbrc bcaa bcar bcat bcbc bcca bccc bcci bcda bcia bcit bcra bctc bd-r bdbc bddc bdii biad biar biat biba bibb bibi bica bicc bici bida bidi bidr bira birb bird biri birr birt bita bitc bitd bitt brab brac brad brai brat brca brcb brda brdt bria bric brid brit brrr brtc btaa btcc btdt btrc btrt bttb c-cd caaa caab caac caat caba cabi cac- caca cacc caci cacr cada cadc cadd cadi cadr caia caib caic caid cair cait cara carb carc card cari carr cart cat- cata catb catc catd cati catt cbac cbar cbat cbbc cbca cbcc cbcr cbct cbdb cbdc cbdi cbia cbid cbir cbit cbrd cbrt cbta cbtc ccaa ccab ccac ccad ccai ccar ccat ccba ccbc ccca cccb cccc ccci ccdc ccdi ccdr ccic ccid ccii ccir ccra ccrc ccri ccrt cctb cctc cctt cd-r cdaa cdac cdad cdai cdba cdda cddb cddr cdic cdii ciaa ciar ciat ciba cibc cibi cica cicc cici cicr cict cida cidc cidi cidr cidt ciia ciid ciii ciit cira cirb circ ciri cirr cirt cita citb citi citt crab crac crai crar crat crbc crca crcc crcr crda crdc cria crib cric crit crrt crtc ctab ctba ctbi ctca ctia ctic ctrc ctta daab daad daar daba dabb dabt daca daci dact dada dadi daia daid dair dait dara darb darc dard dari darr dart data dati datr datt dbar dbcc dbit dbtt dcbc dcca dccb dccc dcci dcct dcdb dcia dcii dcra dctc dddd ddrc dia- diab diac diad diar diat diba dibb dica dici dict dida didi diii dira dird dirr dirt dita diti ditt draa drab drac drad drar drat drba drbc drca drda drib dric drit drra dtaa dtac dtcc iaaa iaac iaai iaat iaba iaca iacc iacr iact iadb iadc iadt iaia iara iarc iart iata iatc iati ibac ibad ibar ibat ibca ibia ibid ibra ibrc ibrd ibri ibtb ibtc icaa icab icac icad icai icar icat icbc icbd icca iccb iccc icci iccr icct icdc icdd icra icrc icrr icrt icta idad idar idat idca idcr idda idia idic idid idir idra idrc idta iiac iica iicd iida iiii iiit iira iirc iita iitr iitt irac irad irai irar irca ircc ircd irda irdc iri- iria iric irid irra irrc irri irta irti itaa itac itai itar itat itia itic itra itri itta raab raad raat raba rabb rabi rac- raca racc raci ract rada radc radd radr radt raia raic raid raii rair rait rara rarb rari rata rati ratt rbbb rbbr rcac rcbc rccb rccc rcdc rcic rcid rcrd rctc rcti rdac riaa riab riad riai riat rib- riba rica ricc rict rida ridc ridd ridi riia riri rita riti ritt rrad rrat rrrr rtai rtca rtcc rtdt taa- taar taat taba tabb tabc tabi taca tacc taci tact tada taia tair tait tara tarb tarc tard tari tarr tart tata tatb tati tatr tatt tbar tbca tbcb tbcc tbcd tbit tbrb tbta tcad tcca tccc tcdd tctc tdac tddb tdra tdri tiaa tiab tiar tiba tibi tica ticc tidc tidd tiit tira tirb tird tiri tirr tita titc titi titt traa trab trac trad trai trat trca trcc tri- tria trib tric trit trra trtc trtr ttab ttbb tttt