a-ak a-be aaaa aaab aaac aaae aaar aaba aabb aabc aabt aaca aacb aacc aace aack aacr aact aaea aaec aage aaka aake aara aarc aare aart aata aatc aatk aatt abaa abab abac abae abag abak abar abat abb- abba abbb abbe abbr abbt abca abcb abcc abcr abct abec abee aber abet abra abrc abta ac-t acaa acab acac acae acag acar acat acba acca accc acce acct ace- acea acec acek acer acet acga acgr acke acr- acra acrc acre acrr acta actc acte actg actt aeac aecb aect aeer aega aeka aer- aera aerc aeta aetc aetr aett agac agag agar agat agba agca agcc agce agct agea agee ager aget agga agge agra agre agta agte agtr akaa akae akar akca akee akeg aker akka akr- akra akre akte arab arac arae arag arak arar arat arba arbe arc- arca arce arct area arec aree areg arek aret arga argb arge arka arke arr- arra arrc arre arrg arrk arrr arrt arta artc arte artr at-t ataa atab atac atae atak atar atat atca atcc atck atcr atea atec atee ater atka atkt atra atrc atre atrk atta atte attr baaa baak baar baat baba babb babe babr bac- baca bacc bace back bact baek baer baga bage bagg bagt bak- baka bake bakr bakt bar- bara barb barc bare barg bark barr bart bata batc bate batt bbbb bbeb bbet bbga bbrc bbrg bcaa bcar bcat bcbc bcbg bcca bccc bcec bcer bcet bcra bctc beag beak bear beat beba bebb bebe beca beck beeb beeg beek beer beet bega begg beka beke bera berc bere berg berk berr bert beta betc bete bett bgca brab brac brae brag brak brat brca brcb brce brea breb brec bree breg brek brer bret brka brkb brrr brtc btaa btcc btec btek btrc btrt bttb caaa caab caac caat caba cabe cabg cac- caca cacc cace cack cacr caec caer caga cage cagg cagr caka cake cara carb carc care cark carr cart cat- cata catb catc cate catt cbac cbar cbat cbbc cbca cbcc cbce cbcr cbct cbea cbec cbee cber cbet cbga cbgb cbka cbkg cbkr cbre cbrt cbta cbtc ccaa ccab ccac ccag ccar ccat ccba ccbc ccca cccb cccc ccee ccga ccgc ccgt ccra ccrc ccre ccrg ccrt cctb cctc cctt ceac cear ceat ceba cec- ceca cece cect ceeb ceec cege ceke cer- cera cerc cere cert cet- ceta cete cgac cgcc cgcg cger ckac ckat ckbc ckbe ckck cker ckga ckrc cktb crab crac crag crar crat crbc crca crcc crce crcr cre- crea creb crec cree creg cret crkc crrt crtc ctab ctae ctag ctba ctca ctec ctge ctrc ctta eaba eaca eacc eaec eaga eage eara earb eare eart eata eate ebac ebba ebbc ebbr ebcc eber ecaa ecac ecar ecat ecbc ecbe ecca eccb eccc ecce ecct ecka ecra ecrc ecrr ect- ecta ectc eeca eeea eeee eega eeka eeke eera eerc eerg eeta eetc eete egaa egae egar egat egba egbe egcc egcg egcr egea egec egee eger eggb egge egra egre egta egte egtk eka- ekab ekeb ekek eker eket ekka ekta erat erba erbb erbe erca ercc erce ereb erec erer eret erg- erga ergg erke erra errc erre erta etag etak etat etbc etbr etcc etec etee eter etka etra etre etta ette gaar gaba gabb gabe gabr gabt gace gack gaea gaec gaer gaga gage gagg gara garb gare garg garr gart gata gatc gate gatr gatt gbag gc-c gcaa gcat gcbc gccc gcet gcrg gctc geab gear geat geba gebe geca gece geck geek geer geet gege gegg gera gerb gere gert geta getb gete getg getk gett ggbt gggg grab grac grae grat grbr grcc grce grea greb grec gree greg gret grrr grtc gtaa gtbr gtcr gtea gtta kaaa kaab kaag kaak kaar kaat kaba kabb kabc kabe kabg kabr kacb kacc kace kact kaer kaet kag- kaga kagb kagc kage kagg kagr kagt kaka kakc kake kakk kakt kara karb kare karg kark karr kart kat- kata katb katc kate katg katk katr katt kbaa kbab kbac kbae kbak kbar kbat kbba kbbb kbbc kbbe kbbg kbbk kbbr kbbt kbca kbcb kbce kbck kbcr kbct kbeb kbec kbee kbek kber kbet kbga kbgb kbge kbgg kbgr kbgt kbkb kbkg kbkk kbkr kbra kbrb kbrc kbre kbrg kbrk kbrt kbta kbtb kbtc kbte kbtk kbtr kbtt kcaa kcab kcac kcar kcat kcba kcbc kcbk kcbr kcca kccb kccc kcck kccr kcct kcea kceb kcec kcee kceg kcet kcgc kcgr kckc kckk kckr kcrc kcrg kcrr kcrt kcta kctb kctc kcte kea- keag keak kear keat keba kebb kebc kebe kebr kebt keca kecg keck kecr keek keer keet kega kege kegg kegk kegr keka kekb kekc keke ker- kera kerb kerc kere kerk kerr kert ket- keta ketc kete ketk ketr kett kgab kgac kgak kgba kgbb kgbc kgbr kgbt kgcb kgcc kgce kgcr kgeb kgec kget kgga kggg kggr kgra kgrb kgrc kgre kgrg kgrk kgrr kgrt kgtk kkaa kkac kkag kkar kkat kkba kkbb kkbe kkbg kkbr kkbt kkcb kkck kkcr kkct kkea kkeg kkgb kkgr kkkk kkrb kkrc kkre kkrk kkrr kkrt kktc kktk krab krac krae krag krak krar krat krba krbb krbe krbg krbk krbr krbt krca krcb krcc krce krcg krea kreb krec kree krek kret krgt krka krkc krke krkk krkr krrb krrc krre krrg krrk krrr krrt krta krtc krtk krtr ktaa ktae ktag ktak ktar ktat ktba ktbb ktbc ktbg ktbr ktbt ktcc ktce ktck ktcr ktea ktec ktee kteg ktek ktga ktge ktgg ktgr ktkb ktkc ktke ktkk ktkr ktkt ktrb ktrc ktre ktrg ktrk ktrr ktrt kttc kttg kttk kttr kttt raab raag raak raat raba rabb rabe rabk rac- raca racc race rack ract raec raeg raer raga rage ragg raka rake rakk rakt rara rarb rare rark rata rate ratk ratt rbbb rbbr rcac rcbc rccb rccc rcet rcga rcgc rcrg rctc rctg rea- reac reae