a-be a-ii aaaa aaab aaac aaae aaai aaam aaba aabb aabc aabi aabm aaca aacb aacc aace aaci aacm aaea aaec aaem aaib aaic aaii aama aamb aamc aame aami abaa abab abac abae abai abam abax abb- abba abbb abbe abbi abca abcb abcc abci abec abee abia abib abic abie abim abma abmb abmc acaa acab acac acae acai acba acca accc acce acci accm ace- acea acec acem aci- acia acic acie acim acma acmc acme acmi aeac aebi aecb aeci aiai aiba aica aicc aice aiea aiee aiia aiib aiic aimc aime aimi aimm aixa aixi aixm amaa amac amae amai amam amax amb- amba ambe ambi ambx amca amcc amec amee amei amex amia amib amic amie amii amix amm- amma amme ammi axce axi- axia axie axim ba-i ba-x baaa baam baba babb babe babi babm bac- baca bacc bace baci baia baib baic baie baix bama bamb bamc bame bami bamm baxi bbbb bbci bbcm bbeb bcaa bcam bcbc bcca bccc bcci bccm bcec bcia bcie bcma beam beba bebb bebe bebi beca beci beeb beem beia beic beim bema beme biba bibb bibe bibi bica bicc bice bici bieb bima bimx bixa bixi bmaa bmce bmci bmic bmmi caaa caab caac caam caba cabe cabi cac- caca cacc cace caci cacm caec caei caem caex caia caib caic caim caix cama camb camc came cami camm camx caxa cbac cbax cbbc cbca cbcc cbce cbcm cbea cbec cbee cbia cbme cbxa ccaa ccab ccac ccai ccam ccba ccbc ccca cccb cccc ccci cccm ccee ccic ccii ccim ccix ccma ccmb ccmc ccmm ccxi ceac ceba cec- ceca cece ceci cecm ceeb ceec ceem ceim cema cemb ceme cemm cexe ciaa ciam ciba cibc cibe cibi cica cicc cici ciee ciia ciii cima cimb cime cimi cimm cixi cmaa cmac cmax cmba cmbc cmbx cmcc cmea cmec cmii cmix cmmb cmmc cmmi cxii cxix cxxi cxxx eaba eaca eacc eaec eama eame ebac ebam ebba ebbc ebcc ebic ebix ecaa ecac ecai ecam ecbc ecbe ecca eccb eccc ecce ecci eccm ecem ecib ecim ecma ecmi eeca eeea eeee eica eiec eiei eime eimi emac emae emam emax emba embe embi emcc emex emia emic emii emim emix emma emme emmi exa- exai exam exec exim i-be iaaa iaac iaai iaba iabm iaca iacc iaea iaec iaia iaim iama iamb iame iami iamx ibac ibbm ibca ibea ibec ibex ibia ibie ibim ibma ibmx icaa icab icac icai icam icbc icbm icca iccb iccc icci icea icec icee icem icex icma icmc icme icmi icmm ieac iecc ieie iema ieme iiac iica iiie iiii iimc imac imai imam imax imba imbe imbi imca imcb imci imea imec imix imma imme immi ixia ixxi ma-i maaa maac maai maam maba mabe mabi mac- maca macb macc mace maci macx maee maem maia maib maie maii maim mama mamc mame mami maxi maxx mbac mbam mbba mbca mbci mbia mbim mcaa mcac mcba mcbc mcbi mcca mccc mcci mccx mcia mcic mcii mcix mcmc mcmi mcmx mcxc mcxi meai mebe mec- meca mecc mece meem meic mema memc meme memx mexx miaa miab miac miai miam mibc mica micc mice mici miee miem miii mim- mima mime mimi mixe mixi mixx mmaa mmab mmac mmai mmcc mmci mmcm mmcx mmea mmic mmii mmix mmmc mmmm mmxi mmxx mxii mxim mxxi xace xbai xbee xcii xema xeme xexe xibe xica xiii xima xixi xmax xmii xxii xxix xxxi xxxx