a-be a-ii aaaa aaab aaac aaae aaai aaba aabb aabc aabi aabt aaca aacb aacc aace aaci aaco aact aaea aaec aaib aaic aaii aaoe aaoo aata aatc aatt abaa abab abac abae abai abat abb- abba abbb abbe abbi abbo abbt abca abcb abcc abci abct abec abee abet abia abib abic abie abit aboa abob aboo abot abta ac-t acaa acab acac acae acai acat acba acca accc acce acci acco acct ace- acea acec acet aci- acia acic acie acoa acoe acot acta actc acte acti acto actt aeac aebi aecb aeci aect aeio aeit aeta aetc aeto aett aiai aiba aibo aica aicc aice aiea aiee aiet aiia aiib aiic aioc aioi aita aite aiti aitt aoba aoca aoce aotc at-t ataa atab atac atae atai atat atca atcc atco atea atec atee atei ateo atia atic atie atit atob atoc atoe atoi atot atta atte atti atto ba-i baaa baat baba babb babe babi babo bac- baca bacc bace baci baco bact baia baib baic baie baio bait bata batc bate bati bato batt bbbb bbci bbeb bbet bcaa bcat bcbc bcca bccc bcci bcec bcet bcia bcie bcit bctc beat beba bebb bebe bebi bebo beca beci beeb beet beia beic beit beo- beot beta betc bete beti beto bett biao biat biba bibb bibe bibi bibo bica bicc bice bici bico bieb biet bio- bioc bioi biot bita bitc bite bito bitt boab boac boai boat boba bobb bobe bobi bobo boca boce boco boea boec boee boeo boet boi- boie boii boit boob booc booe boot bota botb bote boti boto bott btaa btcc btec btie btob bttb c-bo caaa caab caac caat caba cabe cabi cabo cac- caca cacc cace caci caco caec caei caia caib caic caio cait caoi cat- cata catb catc cate cati cato catt cbac cbat cbbc cbca cbcc cbce cbct cbea cbec cbee cbet cbia cbit cbot cbta cbtc ccaa ccab ccac ccai ccat ccba ccbc ccca cccb cccc ccci ccee ccic ccii ccob ccoc cctb cctc cctt ceac ceat ceba cec- ceca cece ceci ceco cect ceeb ceec cet- ceta cete ceti ceto ciaa ciao ciat ciba cibc cibe cibi cibo cica cicc cici cico cict ciee ciia ciii ciit ciob cita citb cite citi cito citt coai coat coba cobb cobe cobi cobo coca coce coco coct coia coit coob coot cota cotb cotc cote coti coto cott ctab ctae ctba ctbi ctca ctec ctia ctic ctot ctta eaba eaca eacc eaec eata eate eati ebac ebba ebbc ebbo ebcc ebic ebit eboe eboo ecaa ecac ecai ecao ecat ecbc ecbe ecca eccb eccc ecce ecci ecco ecct ecib ecit eco- ecot ect- ecta ectc ecto eeca eeea eeee eeoc eeta eetc eete eiao eica eico eiec eiei eita eitb eitc eiti eito eota eotc eoto etai etat etbc etcc etco etec etee etic etio etoe etta ette etti etto 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 ibot ibtb ibtc icaa icab icac icai icao icat icbc icca iccb iccc icci icco icct icea icec icee icet icoc icta ieac ieat iecc ieet ieie ieio ieta iett iiac iica iiie iiii iiio iiit iioi iioo iita iitt ioba iobi ioci ioee ioii ioio ioit iooi iooo iota iote ioto itaa itac itai itat itbe itea itec itet itia itic itie itoi itoo itta itto o-eo oaic oate obai obba obbo obea obec obet obia obie obit oboe oboi obot ocab ocac ocat ocbc occa occc occi occt oce ocee ocet oct- octa octe octi octo oec- oeca oecc oeec oeta oeti oiba oici oiii oita oitc oiti ooaa ooba oobe oobi ooia oooo ootb otac otea otee otic otit oto- otoe otoo otta otte otti otto taa- taat taba tabb tabc tabe tabi tabo taca tacc tace taci taco tact taec taia taio tait taoa tata tatb tate tati tato tatt tbca tbcb tbcc tbce tbit tbta tcca tccc tctc teac teat teba tebo teca teco tect teec teet teia teic teie teta tete teti teto tett tiaa tiab tiao tiba tibi tica ticc tice tico tie- tiea tiee tiei tieo tiet tiit tita titc tite titi tito titt toab toat toba tobe tobi tobo tobt toca toce toci toco toea toee toei toet toie toit tooa toot tota totc tote toti toto tott ttab ttbb tteo ttoe tttt