a-ak a-be a-ii aaaa aaab aaac aaae aaai aaba aabb aabc aabi aabt aaca aacb aacc aace aaci aack aact aaea aaec aaib aaic aaii aaka aake aata aatc aatk aatt abaa abab abac abae abai abak abat abb- abba abbb abbe abbi abbt abca abcb abcc abci abct abec abee abet abia abib abic abie abit abta ac-t acaa acab acac acae acai acat acba acca accc acce acci acct ace- acea acec acek acet aci- acia acic acie acke acta actc acte acti actt aeac aebi aecb aeci aect aeit aeka aeta aetc aett aiai aiba aica aicc aice aiea aiee aiet aiia aiib aiic aika aike aiki aita aite aiti aitt akaa akae akai akca akee akia akie akik akka akki akte at-t ataa atab atac atae atai atak atat atca atcc atck atea atec atee atei atia atic atie atik atit atka atkt atta atte atti ba-i baaa baak baat baba babb babe babi bac- baca bacc bace baci back bact baek baia baib baic baie baik bait bak- baka bake baki bakt bata batc bate bati batt bbbb bbci bbeb bbet bcaa bcat bcbc bcca bccc bcci bcec bcet bcia bcie bcit bctc beak beat beba bebb bebe bebi beca beci beck beeb beek beet beia beic beik beit beka beke beki beta betc bete beti bett biak biat biba bibb bibe bibi bica bicc bice bici bick bieb biet bike bita bitc bite bitt btaa btcc btec btek btie bttb caaa caab caac caat caba cabe cabi cac- caca cacc cace caci cack caec caei caia caib caic caik cait caka cake cat- cata catb catc cate cati catt cbac cbat cbbc cbca cbcc cbce cbct cbea cbec cbee cbet cbia cbit cbka cbta cbtc ccaa ccab ccac ccai ccat ccba ccbc ccca cccb cccc ccci ccee ccic ccii cctb cctc cctt ceac ceat ceba cec- ceca cece ceci cect ceeb ceec ceke cet- ceta cete ceti ciaa ciak ciat ciba cibc cibe cibi cica cicc cici cict ciee ciia ciii ciit cika cita citb cite citi citt ckac ckat ckbc ckbe ckbi ckck cktb ctab ctae ctba ctbi ctca ctec ctia ctic ctta eaba eaca eacc eaec eata eate eati ebac ebba ebbc ebcc ebic ebit ecaa ecac ecai ecat ecbc ecbe ecca eccb eccc ecce ecci ecct ecib ecit ecka ect- ecta ectc eeca eeea eeee eeka eeke eeta eetc eete eica eick eiec eiei eika eike eiki eita eitb eitc eiti eka- ekab ekeb ekek eket ekka ekki ekta etai etak etat etbc etcc etec etee etic etik etka etta ette etti i-be iaaa iaac iaai iaat iaba iaca iacc iact iaea iaec iaia iata iatc iate iati ibac ibat ibca ibea ibec ibet ibia ibie ibtb ibtc icaa icab icac icai icat icbc icca iccb iccc icci icct icea icec icee icet icke icta ieac ieat iecc ieet ieie ieta iett iiac iica iiie iiii iiit iita iitt ikat ikea ikee ikki itaa itac itai itak itat itbe itea itec itek itet itia itic itie itta k-ci kaaa kaab kaai kaak kaat kaba kabb kabc kabe kabi kacb kacc kace kaci kact kaei kaet kaia kaib kaic kaie kaii kaik kait kaka kakc kake kaki kakk kakt kat- kata katb katc kate kati katk katt kbaa kbab kbac kbae kbai kbak kbat kbba kbbb kbbc kbbe kbbi kbbk kbbt kbca kbcb kbce kbci kbck kbct kbeb kbec kbee kbek kbet kbia kbib kbic kbie kbik kbit kbkb kbkk kbta kbtb kbtc kbte kbtk kbtt kcaa kcab kcac kcai kcat kcba kcbc kcbi kcbk kcca kccb kccc kcci kcck kcct kcea kceb kcec kcee kcei kcet kcic kcie kcii kcit kckc kckk kcta kctb kctc kcte kcti kea- keak keat keba kebb kebc kebe kebi kebt keca keck keek keet keib keii keik keka kekb kekc keke keki ket- keta ketc kete keti ketk kett kiab kiac kiai kiba kibb kibc kibe kibi kibt kica kicb kicc kice kick kict kiia kiic kiii kiik kiit kika kikc kiki kikk kikt kita kitc kite kiti kitt kkaa kkac kkai kkat kkba kkbb kkbe kkbi kkbt kkcb kkci kkck kkct kkea kkia kkic kkik kkit kkkk kktc kktk ktaa ktae ktai ktak ktat ktba ktbb ktbc ktbt ktcc ktce ktck ktea ktec ktee ktek ktia ktib ktic ktie ktik ktkb ktkc ktke ktkk ktkt kttc ktti kttk kttt taa- taat taba tabb tabc tabe tabi taca tacc tace taci tack tact taec taia taik tait taka take taki takk takt tata tatb tate tati tatt tbca tbcb tbcc tbce tbit tbta tcca tccc tctc teac teak teat teba teca teck tect teec teek teet teia teic teie teka teke teta tete teti tett tiaa tiab tiba tibi tica ticc tice tick tie- tiea tiee tiei tiet tiit tika tike tiki tita titc tite titi titt tkac ttab ttbb tttt