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 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 amaa amac amae amai amam amb- amba ambe ambi amca amcc amec amee amei amia amib amic amie amii amm- amma amme ammi ba-i baaa baam baba babb babe babi babm bac- baca bacc bace baci baia baib baic baie bama bamb bamc bame bami bamm 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 bmaa bmce bmci bmic bmmi caaa caab caac caam caba cabe cabi cac- caca cacc cace caci cacm caec caei caem caia caib caic caim cama camb camc came cami camm cbac cbbc cbca cbcc cbce cbcm cbea cbec cbee cbia cbme ccaa ccab ccac ccai ccam ccba ccbc ccca cccb cccc ccci cccm ccee ccic ccii ccim ccma ccmb ccmc ccmm ceac ceba cec- ceca cece ceci cecm ceeb ceec ceem ceim cema cemb ceme cemm ciaa ciam ciba cibc cibe cibi cica cicc cici ciee ciia ciii cima cimb cime cimi cimm cmaa cmac cmba cmbc cmcc cmea cmec cmii cmmb cmmc cmmi eaba eaca eacc eaec eama eame ebac ebam ebba ebbc ebcc ebic 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 emba embe embi emcc emia emic emii emim emma emme emmi i-be iaaa iaac iaai iaba iabm iaca iacc iaea iaec iaia iaim iama iamb iame iami ibac ibbm ibca ibea ibec ibia ibie ibim ibma icaa icab icac icai icam icbc icbm icca iccb iccc icci icea icec icee icem icma icmc icme icmi icmm ieac iecc ieie iema ieme iiac iica iiie iiii iimc imac imai imam imba imbe imbi imca imcb imci imea imec imma imme immi ma-i maaa maac maai maam maba mabe mabi mac- maca macb macc mace maci maee maem maia maib maie maii maim mama mamc mame mami mbac mbam mbba mbca mbci mbia mbim mcaa mcac mcba mcbc mcbi mcca mccc mcci mcia mcic mcii mcmc mcmi meai mebe mec- meca mecc mece meem meic mema memc meme miaa miab miac miai miam mibc mica micc mice mici miee miem miii mim- mima mime mimi mmaa mmab mmac mmai mmcc mmci mmcm mmea mmic mmii mmmc mmmm