a-be aaaa aaab aaac aaae aaam aaba aabb aabc aabm aabt aaca aacb aacc aace aacm aact aaea aaec aaem aama aamb aamc aame aata aatc aatt abaa abab abac abae abam abat abb- abba abbb abbe abbt abca abcb abcc abct abec abee abet abma abmb abmc abmt abta ac-t acaa acab acac acae acat acba acca accc acce accm acct ace- acea acec acem acet acma acmc acme acta actc acte actt aeac aecb aect aemt aeta aetc aett amaa amac amae amam amat amb- amba ambe amca amcc amec amee amet amm- amma amme amta amtc amte at-t ataa atab atac atae atat atca atcc atea atec atee atem atm- atma atme atta atte baaa baam baat baba babb babe babm bac- baca bacc bace bact bama bamb bamc bame bamm bata batc bate batt bbbb bbcm bbeb bbet bcaa bcam bcat bcbc bcca bccc bccm bcec bcet bcma bctc beam beat beba bebb bebe beca beeb beem beet bema beme beta betc bete bett bmaa bmce bmtc btaa btcc btec bttb caaa caab caac caam caat caba cabe cac- caca cacc cace cacm caec caem cama camb camc came camm camt cat- cata catb catc cate catm catt cbac cbat cbbc cbca cbcc cbce cbcm cbct cbea cbec cbee cbet cbme cbta cbtc ccaa ccab ccac ccam ccat ccba ccbc ccca cccb cccc cccm ccee ccma ccmb ccmc ccmm cctb cctc cctt ceac ceat ceba cec- ceca cece cecm cect ceeb ceec ceem cema cemb ceme cemm cet- ceta cete cmaa cmac cmba cmbc cmcc cmea cmec cmmb cmmc cmta cmtc ctab ctae ctba ctca ctec ctma ctta eaba eaca eacc eaec eama eame eata eate ebac ebam ebba ebbc ebcc ecaa ecac ecam ecat ecbc ecbe ecca eccb eccc ecce eccm ecct ecem ecma ect- ecta ectc eeca eeea eeee eeta eetc eete emac emae emam emba embe emcc emet emma emme emta emte etam etat etbc etcc etec etee etem etta ette maaa maac maam maat maba mabe mac- maca macb macc mace mact maee maem mama mamc mame mata matc mate matt mbac mbam mbba mbca mbta mcaa mcac mcat mcba mcbc mcca mccc mcmc mcmt mctc meat mebe mec- meca mecc mece meem meet mema memc meme met- meta mete mett mmaa mmab mmac mmcc mmcm mmct mmea mmmc mmmm mtaa mtab mtac mtbc taa- taat taba tabb tabc tabe taca tacc tace tact taec taem tama tamc tame tamm tata tatb tate tatt tbca tbcb tbcc tbce tbta tcam tcca tccc tctc teac team teat teba teca tect teec teem teet tema teme teta tete tett tmaa tmac tmbc tmca tmcc tmcm tmtt ttab ttbb ttma tttt