a-be aaaa aaab aaac aaae aaal aaba aabb aabc aabl aabt aaca aacb aacc aace aacl aact aaea aaec aage aala aalc aale aall aata aatc aatt abaa abab abac abae abag abal abat abb- abba abbb abbe abbt abca abcb abcc abcl abct abec abee abel abet abgl abla able abta ac-t acaa acab acac acae acag acat acba acbl acca accc acce acct ace- acea acec acel acet acga acla aclc acle acta actc acte actg actl actt aeac aecb aecl aect aega aela aelc aeta aetc aett agac agag agal agat agba agca agcc agce agct agea agee agel aget agga agge agla aglc agle agta agte alaa alac alae alag alal alat alb- alba albc albe alca alcc alce alea alec alee aleg alet alg- alga alge all- alla alle alll alta alte at-l at-t ataa atab atac atae atal atat atca atcc atcl atea atec atee atel atla atle atta atte baaa baal baat baba babb babe bac- baca bacc bace bact bael baga bage bagg bagt bala balc bale ball balt bata batc bate batt bbbb bbeb bbet bbga bblb bcaa bcat bcbc bcbg bcca bccc bccl bcec bcet bctc beag beal beat beba bebb bebe beca beeb beeg beel beet bega begg bela bele belg bell belt beta betc bete bett bgca blaa blab blac blae blag blat blbt blea bleb blee bleg blet btaa btcc btcl btec btla bttb caaa caab caac caal caat caba cabe cabg cac- caca cacc cace caec caga cage cagg cala calc cale call calt cat- cata catb catc cate catt cbac cbal cbat cbbc cbca cbcc cbce cbcl cbct cbea cbec cbee cbet cbga cbgb cblb cblc cbta cbtc cbtl ccaa ccab ccac ccag ccat ccba ccbc ccca cccb cccc cccl ccee ccel ccga ccgc ccgt ccla cclc cclg cctb cctc cctl cctt ceac ceal ceat ceba cec- ceca cece cect ceeb ceec ceel cege cel- cela celc cele cell celt cet- ceta cete cgac cgal cgcc cgcg cgel cgtl clab clag clat clea clec clee cleg clet cltb cltc ctab ctae ctag ctal ctba ctca ctec ctge ctle ctlg ctta e-cl e-la eaba eaca eacc eaec eaga eage eagl eala ealc eale eata eate ebac ebal ebba ebbc ebcc ebel ebla ecaa ecac ecal ecat ecbc ecbe ecca eccb eccc ecce eccl ecct ecla eclt ect- ecta ectc eeca eeea eeee eega eele eeta eetc eete egaa egae egal egat egba egbe egcc egcg egea egec egee egel eggb egge eglc egle egta egte el-b elab elac elal elat elba elbe elca elcb elce elea elec elee elet elgg ella elle elta elte etag etal etat etbc etcc etec etee etel etla etta ette gaal gaba gabb gabe gabl gabt gace gaea gaec gael gaga gage gagg gala gale gall galt gata gatc gate gatt gbag gc-c gcaa gcal gcat gcbc gccc gcet gclc gctc geab geal geat geba gebe geca gece geel geet gege gegg gegl gela gelb gele gelg gell gelt geta getb gete getg gett ggbt ggcl gggg glaa glab glat glbc glcc glce gleb glee gleg glet glge gtaa gtea gtta laaa laac laag laal laat laba labe laca lacc lace lacl lact lael laet lag- laga lage lagg lala lale lall lata latc late latt lbcc lbgt lcac lcat lcbc lcca lccc lcce lctl leaa leag leal leat leba leca lece lect leea leel leet lega lege legg lela lele lell leta lete lett lgbt lgca lgte llat llcc llet llgc lllc llll ltac ltae ltbl ltcc ltcg ltee ltge lttc taa- taag taal taat taba tabb tabc tabe tabl taca tacc tace tacl tact taec tael taga tage tagg tala talc tale tall tata tatb tate tatt tbca tbcb tbcc tbce tbta tcca tccc tcga tctc teac teal teat teba teca tecl tect teec teel teet tega tegg tegt tel- tela telc tele telg tell telt teta tete tett tgcc tgel tgle tgtc tlac tlgc ttab ttbb tttt