a-ii aaaa aaab aaac aaai aaba aabb aabc aabi aabt aaca aacb aacc aaci aact aaib aaic aaii aata aatc aatt abaa abab abac abag abai abat abb- abba abbb abbi abbt abca abcb abcc abci abct abia abib abic abig abit abta ac-t acaa acab acac acag acai acat acba acca accc acci acct acga acgi aci- acia acic acta actc actg acti actt agac agag agai agat agba agca agcc agct agga aggi agia agib agic agig agii agit agta aiai aiba aica aicc aiga aiia aiib aiic aita aiti aitt at-t ataa atab atac atai atat atca atcc atia atic atit atta atti ba-i baaa baat baba babb babi bac- baca bacc baci bact baga bagg bagi bagt baia baib baic baig bait bata batc bati batt bbbb bbci bbga bcaa bcat bcbc bcbg bcca bccc bcci bcia bcit bctc bgca bgia biat biba bibb bibi bica bicc bicg bici biga bigb bigc bigg bigt bita bitc bitt btaa btcc bttb caaa caab caac caat caba cabg cabi cac- caca cacc caci caga cagg cagi caia caib caic cait cat- cata catb catc cati catt cbac cbat cbbc cbca cbcc cbct cbga cbgb cbia cbit cbta cbtc ccaa ccab ccac ccag ccai ccat ccba ccbc ccca cccb cccc ccci ccga ccgc ccgt ccic ccii cctb cctc cctt cgac cgcc cgcg ciaa ciat ciba cibc cibi cica cicc cici cict ciga cigi ciia ciii ciit cita citb citg citi citt ctab ctag ctba ctbi ctca ctia ctic ctta gaba gabb gabi gabt gaga gagg gagi gaia gaig gait gata gatc gati gatt gbag gc-c gcaa gcat gcbc gccc gcic gcii gctc ggbt gggg giaa giac giai giat giba gibb gica giga gigg gigi gita gtaa gtta iaaa iaac iaai iaat iaba iaca iacc iact iaia iata iatc iati ibac ibat ibca ibga ibia ibtb ibtc icaa icab icac icag icai icat icbc icca iccb iccc icci icct icga icgc icta igac igba igbc igcc igga igia iiac iica iiii iiit iita iitt itaa itac itai itat itgc itia itic itta taa- taag taat taba tabb tabc tabi taca tacc taci tact taga tagg tagi taia taig tait tata tatb tati tatt tbca tbcb tbcc tbit tbta tcca tccc tcga tctc tgcc tgtc tiaa tiab tiba tibi tica ticc tiga tigi tiit tita titc titi titt ttab ttbb tttt