a-ii aaaa aaab aaac aaai aaba aabb aabc aabi aabt aaca aacb aacc aaci aact aacu aaib aaic aaii aata aatc aatt abaa abab abac abai abat abau abb- abba abbb abbi abbt abca abcb abcc abci abct abia abib abic abit abiu abta abtu abua abut ac-t acaa acab acac acai acat acba acca accc acci acct accu aci- acia acic acta actc acti actt actu acu- acut aiai aiba aica aicc aiia aiib aiic aita aiti aitt aitu aiui at-t ataa atab atac atai atat atca atcc atia atic atit atiu atta atti attu atua atub atuc auaa auca auci auct aut- ba-i baaa baat baba babb babi babu bac- baca bacc baci bact baia baib baic bait bata batc bati batt batu bau- bbau bbbb bbci bcaa bcat bcbc bcca bccc bcci bcia bcit bctc bcuc biat biba bibb bibi bica bicc bici bita bitc bitt bitu btaa btcc bttb buat buba bubb bubi bubu buca bucc buci bucu buic buit buiu but- buta buti butt caaa caab caac caat caba cabi cabu cac- caca cacc caci caia caib caic cait caiu cat- cata catb catc cati catt catu cauc caut cbac cbat cbbc cbca cbcc cbct cbcu cbia cbit cbta cbtc ccaa ccab ccac ccai ccat ccba ccbc ccca cccb cccc ccci cccu ccic ccii cctb cctc cctt ccuc ccut ciaa ciat ciau ciba cibc cibi cica cicc cici cict cicu ciia ciii ciit cita citb citi citt citu ciuc ctab ctba ctbi ctca ctia ctic ctta cuau cub- cuba cubb cubi cuca cucc cuci cui- cuit cut- cuta cutc cutt iaaa iaac iaai iaat iaba iaca iacc iact iacu iaia iata iatc iati ibac ibat ibca ibia ibtb ibtc icaa icab icac icai icat icbc icca iccb iccc icci icct iccu icta icub iiac iica iiii iiit iita iitt iiuc itaa itac itai itat itia itic itta iucc iuiu taa- taat taba tabb tabc tabi tabu taca tacc taci tact taia tait tata tatb tati tatt tatu taua taub tauc taut tbca tbcb tbcc tbit tbta tcca tccc tccu tctc tiaa tiab tiba tibi tibu tica ticc tiit tiiu tita titc titi titt titu ttab ttbb tttt tuat tuba tubb tubu tuca tucc tuit tuiu tuta tuti tutt tutu uabc uaca uata uatu uaua ubac ubba ubbi ubic ubii ubit ucai ucat ucbc ucca ucci ucua ucut uica utac utai utau utia utti uttu uuta uuuu