a-be aaaa aaab aaac aaae aaam aaar aaba aabb aabc aabm aabt aaca aacb aacc aace aacm aacr aact aaea aaec aaem aama aamb aamc aame aamr aara aarc aare aarm aart aata aatc aatt abaa abab abac abae abam abar abat abb- abba abbb abbe abbr abbt abca abcb abcc abcr abct abec abee aber abet abma abmb abmc abmt abra abrc abta ac-t acaa acab acac acae acar acat acba acca accc acce accm acct ace- acea acec acem acer acet acma acmc acme acr- acra acrc acre acrm acrr acta actc acte actt aeac aecb aect aeer aemt aer- aera aerc aeta aetc aetr aett amaa amac amae amam amar amat amb- amba ambe ambr amca amcc amec amee amer amet amm- amma amme amra amrc amta amtc amte arab arac arae aram arar arat arba arbe arc- arca arce arcm arct area arec aree arem aret arma armc arme armm armt arr- arra arrc arre arrr arrt arta artc arte artr at-t ataa atab atac atae atar atat atca atcc atcr atea atec atee atem ater atm- atma atme atra atrc atre atrm atta atte attr baaa baam baar baat baba babb babe babm babr bac- baca bacc bace bact baer bama bamb bamc bame bamm bar- bara barb barc bare barm barr bart bata batc bate batt bbbb bbcm bbeb bbet bbrc bcaa bcam bcar bcat bcbc bcca bccc bccm bcec bcer bcet bcma bcra bctc beam bear beat beba bebb bebe beca beeb beem beer beet bema beme bera berc bere berm berr bert beta betc bete bett bmaa bmce bmtc brab brac brae bram brat brca brcb brce brea breb brec bree brem brer bret brmc brrm brrr brtc btaa btcc btec btrc btrt bttb caaa caab caac caam caat caba cabe cac- caca cacc cace cacm cacr caec caem caer cama camb camc came camm camt cara carb carc care carm carr cart cat- cata catb catc cate catm catt cbac cbar cbat cbbc cbca cbcc cbce cbcm cbcr cbct cbea cbec cbee cber cbet cbme cbre cbrm cbrt cbta cbtc ccaa ccab ccac ccam ccar ccat ccba ccbc ccca cccb cccc cccm ccee ccma ccmb ccmc ccmm ccra ccrc ccre ccrt cctb cctc cctt ceac cear ceat ceba cec- ceca cece cecm cect ceeb ceec ceem cema cemb ceme cemm cemr cer- cera cerc cere cert cet- ceta cete cmaa cmac cmba cmbc cmcc cmea cmec cmmb cmmc cmra cmrr cmta cmtc crab crac cram crar crat crbc crca crcc crce crcr cre- crea creb crec cree crem cret crmb crrt crtc crtm ctab ctae ctba ctca ctec ctma ctrc ctrm ctta eaba eaca eacc eaec eama eame eara earb eare eart eata eate ebac ebam ebba ebbc ebbr ebcc eber ecaa ecac ecam ecar ecat ecbc ecbe ecca eccb eccc ecce eccm ecct ecem ecma ecra ecrc ecrm ecrr ect- ecta ectc eeca eeea eeee eera eerc eeta eetc eete emac emae emam emar emba embe embr emcc emer emet emma emme emra emre emta emte eram erat erba erbb erbe erca ercc erce ereb erec erem erer eret erma ermc erme erra errc erre erta etam etat etbc etbr etcc etec etee etem eter etra etre etrm etta ette maaa maac maam maar maat maba mabe mac- maca macb macc mace macr mact maee maem maer mama mamc mame mar- mara marc mare marm marr mart mata matc mate matr matt mbac mbam mbba mbca mbta mcaa mcac mcat mcba mcbc mcca mccc mcmc mcmt mcrc mctc mear meat mebe mec- meca mecc mece mecr meem meer meet mema memc meme memr mer- mera merb merc mere merm mert met- meta mete mett mmaa mmab mmac mmar mmcc mmcm mmct mmea mmmc mmmm mmrc mr-c mrac mrbb mrbm mrca mrcb mrcc mrce mreb mree mrmc mrrc mrta mrtm mrtt mtaa mtab mtac mtbc mtcr mtrc mtre mtrr mttr raab raam raat raba rabb rabe rac- raca racc race ract raec raer rama ramb rame ramm rara rarb rare rata rate ratt rbbb rbbr rcac rcbc rccb rccc rcet rctc rea- reac reae ream rear reat reba rebb rebe reca recc rece recm recr rect reeb reem reet rema reme rera rere rert reta rete retr rett rrat rrmc rrrr rtca rtcc rtce rtcm rtee rtmc taa- taar taat taba tabb tabc tabe taca tacc tace tact taec taem taer tama tamc tame tamm tara tarb tarc tare tarm tarr tart tata tatb tate tatr tatt tbar tbca tbcb tbcc tbce tbrb tbta tcam tcca tccc tctc teac team tear teat teba teca tecr tect teec teem teer teet tema teme ter- tera terc tere term terr teta tete tetr tett tmaa tmac tmbc tmbr tmca tmcc tmcm tmtt traa trab trac trae tram trat trca trcc tre- trea trec tree trem tret trma trmb trra trtc trte trtr ttab ttbb tter ttma tttt