a-ak a-be aaaa aaab aaac aaae aaar aaba aabb aabc aabt aaca aacb aacc aace aack aacr aact aaea aaec aaka aake aara aarc aare aart aata aatc aatk aatt abaa abab abac abae abak abar abat abax abb- abba abbb abbe abbr abbt abca abcb abcc abcr abct abec abee aber abet abra abrc abta ac-t acaa acab acac acae acar acat acba acca accc acce acct ace- acea acec acek acer acet acke acr- acra acrc acre acrr acta actc acte actt aeac aecb aect aeer aeka aer- aera aerc aeta aetc aetr aett aetx akaa akae akar akca akee aker akka akr- akra akre akte arab arac arae arak arar arat arax arba arbe arc- arca arce arct area arec aree arek aret arex arka arke arr- arra arrc arre arrk arrr arrt arta artc arte artr artx at-t at-x ataa atab atac atae atak atar atat atax atca atcc atck atcr atea atec atee ater atex atka atkt atra atrc atre atrk atrx atta atte attr axar axat axce axer ba-x baaa baak baar baat baba babb babe babr bac- baca bacc bace back bact baek baer bak- baka bake bakr bakt bar- bara barb barc bare bark barr bart barx bata batc bate batt baxt bbbb bbeb bbet bbrc bcaa bcar bcat bcbc bcca bccc bcec bcer bcet bcra bctc beak bear beat beba bebb bebe beca beck beeb beek beer beet beka beke bera berc bere berk berr bert beta betc bete bett brab brac brae brak brat brax brca brcb brce brea breb brec bree brek brer bret brex brka brkb brrr brtc btaa btcc btcx btec btek btex btrc btrt bttb caaa caab caac caat caba cabe cac- caca cacc cace cack cacr caec caer caex caka cake cara carb carc care cark carr cart carx cat- cata catb catc cate catt caxa cbac cbar cbat cbax cbbc cbca cbcc cbce cbcr cbct cbea cbec cbee cber cbet cbka cbkr cbre cbrt cbta cbtc cbxa ccaa ccab ccac ccar ccat ccba ccbc ccca cccb cccc ccee ccra ccrc ccre ccrt cctb cctc cctt ceac cear ceat ceba cec- ceca cece cect ceeb ceec ceke cer- cera cerc cere cert cet- ceta cete cexe ckac ckat ckbc ckbe ckbx ckck ckcx cker ckrc cktb crab crac crar crat crax crbc crca crcc crce crcr cre- crea creb crec cree cret crex crkc crrt crtc ctab ctae ctba ctca ctec ctrc ctta cxxx eaba eaca eacc eaec 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 eeka eeke eera eerc eeta eetc eete eext eka- ekab ekeb ekek eker eket ekka ekta er-x erat erba erbb erbe erca ercc erce ereb erec erer eret erke erra errc erre erta etak etat etbc etbr etcc etec etee eter etka etra etre etta ette exa- exec exer exrx exta exte extr kaaa kaab kaak kaar kaat kaba kabb kabc kabe kabr kacb kacc kace kact kaer kaet kaka kakc kake kakk kakt kakx kara karb kare kark karr kart karx kat- kata katb katc kate katk katr katt katx kaxa kaxe kbaa kbab kbac kbae kbak kbar kbat kbba kbbb kbbc kbbe kbbk kbbr kbbt kbca kbcb kbce kbck kbcr kbct kbeb kbec kbee kbek kber kbet kbex kbkb kbkk kbkr kbra kbrb kbrc kbre kbrk kbrt kbrx kbta kbtb kbtc kbte kbtk kbtr kbtt kbxb kbxr kbxt kbxx kc-x kcaa kcab kcac kcar kcat kcba kcbc kcbk kcbr kcbx kcca kccb kccc kcck kccr kcct kcea kceb kcec kcee kcet kckc kckk kckr kckx kcrc kcrr kcrt kcrx kcta kctb kctc kcte kctx kcxr kea- keak kear keat keba kebb kebc kebe kebr kebt keca keck kecr keek keer keet keka kekb kekc keke ker- kera kerb kerc kere kerk kerr kert kerx ket- keta ketc kete ketk ketr kett ketx kexa kexb kexx kkaa kkac kkar kkat kkba kkbb kkbe kkbr kkbt kkcb kkck kkcr kkct kkea kkex kkkk kkrb kkrc kkre kkrk kkrr kkrt kkrx kktc kktk kktx kkxa kkxk kkxt kkxx krab krac krae krak krar krat krba krbb krbe krbk krbr krbt krbx krca krcb krcc krce krea kreb krec kree krek kret krex krka krkc krke krkk krkr krkx krrb krrc krre krrk krrr krrt krrx krta krtc krtk krtr krtx krxa krxb krxk krxr krxt krxx ktaa ktae ktak ktar ktat ktba ktbb ktbc ktbr ktbt ktcc ktce ktck ktcr ktcx ktea ktec ktee ktek ktex ktkb ktkc ktke ktkk ktkr ktkt ktkx ktrb ktrc ktre ktrk ktrr ktrt ktrx kttc kttk kttr kttt kttx ktxa ktxb ktxc ktxk ktxr ktxt kxaa kxac kxar kxba kxbr kxbt kxbx kxca kxea kxet kxex kxkc kxkk kxkt kxkx kxra kxrb kxrc kxre kxrk kxrr kxrx kxta kxtc kxte kxtk kxtt kxtx kxxe kxxk kxxr kxxt kxxx raab raak raat raba rabb rabe rabk rac- raca racc race rack ract raec raer raka rake rakk rakt rara rarb rare rark rata rate ratk ratt raxa rbbb rbbr rcac rcbc rccb rccc rcet rctc rea- reac reae reak rear reat reba rebb rebe rebk reca recc rece reck recr rect reeb reek reet reka reke rekt rera rere rert reta rete retr rett rexx rrat rrrr rtca rtcc rtce rtee rtex taa- taar taat taba tabb tabc tabe taca tacc tace tack tact taec taer taka take takk takt tara tarb tarc tare tark tarr tart tata tatb tate tatr tatt tax- taxa taxe taxt tbar tbca tbcb tbcc tbce tbrb tbta tcca tccc tctc teac teak tear teat teba teca teck tecr tect teec teek teer teet teka teke ter- tera terc tere terk terr teta tete tetr tett tetx texa text tkac traa trab trac trae trak trat trax trca trcc tre- trea trec tree trek tret trex trra trtc trte trtr ttab ttbb tter tttt txaa txtr xaar xace xact xara xare xate xbar xbee xbra