a-ii a-ya aaaa aaab aaac aaai aaba aabb aabc aabi aabt aaby aaca aacb aacc aaci aact aacy aaib aaic aaii aata aatc aatt abaa abab abac abai abat abay abb- abba abbb abbi abbt abby abca abcb abcc abci abct abia abib abic abit abiy abta abyc abyt abyy ac-t acaa acab acac acai acat acba acca accc acci acct accy aci- acia acic acta actc acti actt aiai aiba aica aicc aiia aiib aiic aita aiti aitt at-t ataa atab atac atai atat atay atca atcc atia atic atit atta atti atty atya ayat ayay ayca ayta ayya ba-i baaa baat baba babb babi baby bac- baca bacc baci bact baia baib baic bait bata batc bati batt baty baya bayi bayt bbay bbbb bbci bcaa bcat bcbc bcca bccc bcci bcia bcit bctc biat biba bibb bibi bica bicc bici bita bitc bitt biya btaa btcc bttb byit caaa caab caac caat caba cabi caby cac- caca cacc caci caia caib caic cait cat- cata catb catc cati catt caty cbac cbat cbbc cbca cbcc cbct cbia cbit cbta cbtc cbyt ccaa ccab ccac ccai ccat ccba ccbc ccca cccb cccc ccci ccic ccii cctb cctc cctt ciaa ciat ciba cibc cibi cica cicc cici cict ciia ciii ciit cita citb citi citt city ctab ctba ctbi ctca ctia ctic ctta cya- cyaa cyba cybb cybc cybi cyc- cyca cycb cycc cyt- cyta cytb cyy- cyyc i-by iaaa iaac iaai iaat iaba iaca iacc iact iaia iata iatc iati iayc ibac ibat ibca ibia ibtb ibtc ibyi icaa icab icac icai icat icbc icca iccb iccc icci icct icta iiac iica iiii iiit iita iitt itaa itac itai itat itay itby itia itic itta itty iyai taa- taat taba tabb tabc tabi taby taca tacc taci tact tacy taia tait tata tatb tati tatt taty taya tayt tayy tbca tbcb tbcc tbit tbta tcby tcca tccc tctc tiaa tiab tiba tibi tica ticc tiit tita titc titi titt tiya tiyi ttab ttbb tttt tybi tyta tyti tytt tyty yaba yacc yacy yait yata yati yaya ycab ycat yccc yctc yiti ytay yyyy