a-be aaaa aaab aaac aaae aaal aaam aaba aabb aabc aabl aabm aabt aaca aacb aacc aace aacl aacm aact aaea aaec aaem aala aalc aale aall aama aamb aamc aame aata aatc aatt abaa abab abac abae abal abam abat abb- abba abbb abbe abbt abca abcb abcc abcl abct abec abee abel abet abla able abma abmb abmc abmt abta ac-t acaa acab acac acae acat acba acbl acca accc acce accm acct ace- acea acec acel acem acet acla aclc acle acma acmc acme acta actc acte actl actt aeac aecb aecl aect aela aelc aemt aeta aetc aett alaa alac alae alal alam alat alb- alba albc albe albm alca alcc alce alea alec alee alem alet all- alla alle alll alma almc alme alta alte altm amaa amac amae amal amam amat amb- amba ambe amca amcc amec amee amel amet amla amm- amma amme amta amtc amte at-l at-t ataa atab atac atae atal atat atca atcc atcl atea atec atee atel atem atla atle atm- atma atme atml atta atte baaa baal baam baat baba babb babe babm bac- baca bacc bace bact bael bala balc bale ball balm balt bama bamb bamc bame baml bamm bata batc bate batt bbbb bbcm bbeb bbet bblb bcaa bcam bcat bcbc bcca bccc bccl bccm bcec bcet bcma bctc beal beam beat beba bebb bebe beca beeb beel beem beet bela bele bell belm belt bema beme beta betc bete bett blaa blab blac blae blam blat blbt blea bleb blee blem blet blme bmaa bmce bmtc btaa btcc btcl btec btla bttb caaa caab caac caal caam caat caba cabe cac- caca cacc cace cacm caec caem cala calc cale call calm calt cama camb camc came caml camm camt cat- cata catb catc cate catm catt cbac cbal cbat cbbc cbca cbcc cbce cbcl cbcm cbct cbea cbec cbee cbet cblb cblc cbme cbta cbtc cbtl ccaa ccab ccac ccam ccat ccba ccbc ccca cccb cccc cccl cccm ccee ccel ccla cclc cclm ccma ccmb ccmc ccmm cctb cctc cctl cctt ceac ceal ceat ceba cec- ceca cece cecm cect ceeb ceec ceel ceem cel- cela celc cele cell celt cema cemb ceme cemm cet- ceta cete clab clam clat clea clec clee clem clet cltb cltc cmaa cmac cmba cmbc cmcc cmea cmec cmla cmll cmmb cmmc cmml cmta cmtc ctab ctae ctal ctba ctca ctec ctle ctma ctta e-cl e-la eaba eaca eacc eaec eala ealc eale eama eame eata eate ebac ebal ebam ebba ebbc ebcc ebel ebla ecaa ecac ecal ecam ecat ecbc ecbe ecca eccb eccc ecce eccl eccm ecct ecem ecla eclt ecma ect- ecta ectc eeca eeea eeee eele eeta eetc eete el-b elab elac elal elam elat elba elbe elca elcb elce elea elec elee elem elet ella elle elma elme elml elta elte emac emae emam emba embe emcc emel emet emle emlm emma emme emml emta emte etal etam etat etbc etcc etec etee etel etem etla etta ette laaa laac laal laam laat laba labe laca lacc lace lacl lact lael laem laet lala lale lall lalm lama lamb lame lamm lata latc late latt lbcc lbmc lcac lcat lcbc lcca lccc lcce lccm lctl lctm leaa leal leam leat leba leca lece lect leea leel leem leet lela lele lell lema leme lemm leta lete lett llat llcc llet lllc llll lmcc ltac ltae ltbl ltcc ltee lttc maaa maac maal maam maat maba mabe mac- maca macb macc mace mact maee mael maem mal- mala male mall malm malt mama mamc mame mata matc mate matl matt mbac mbam mbba mbca mbta mcaa mcac mcat mcba mcbc mcca mccc mccl mcla mclt mcmc mcml mcmt mctc meal meat mebe mec- meca mecc mece meel meem meet mel- mela melb melc mele mell melt mema memc meme meml met- meta mete mett mlab mlat mlba mlcc mlle mltb mmaa mmab mmac mmcc mmcl mmcm mmct mmea mmmc mmmm mtaa mtab mtac mtbc mtel mtlb mtle taa- taal taat taba tabb tabc tabe tabl taca tacc tace tacl tact taec tael taem tala talc tale tall talm tama tamc tame tamm tata tatb tate tatt tbca tbcb tbcc tbce tbta tcam tcca tccc tctc teac teal team teat teba teca tecl tect teec teel teem teet tel- tela telc tele tell telt tema teme teta tete tett tlac tlma tmaa tmac tmbc tmca tmcc tmcm tmtt ttab ttbb ttma ttml tttt