a-ak a-be aaaa aaab aaac aaad aaae aaar aaba aabb aabc aabd aabt aaca aacb aacc aacd aace aack aacr aact aada aadc aade aadt aaea aaec aaka aake aara aarc aard aare aart aata aatc aatk aatt abaa abab abac abad abae abak abar abat abb- abba abbb abbe abbr abbt abca abcb abcc abcd abcr abct abda abec abed abee aber abet abra abrc abta ac-t acaa acab acac acad acae acar acat acba acca accc accd acce acct acda acdb acdc acde acdt ace- acea acec aced acek acer acet ackd acke acr- acra acrc acre acrr acta actc acte actt adaa adab adac adad adae adak adar adat adba adbc adcc adda addc addd adde addr adea adeb adee ader adet adra adre adta aeac aecb aect aede aedt aeer aeka aer- aera aerc aerd aeta aetc aetr aett akaa akae akar akca aked akee aker akka akr- akra akre akte arab arac arad arae arak arar arat arba arbe arc- arca arce arct arda ardc arde area arec ared aree arek aret arka arke arr- arra arrc arre arrk arrr arrt arta artc arte artr at-t ataa atab atac atad atae atak atar atat atca atcc atck atcr atdt atea atec ated atee ater atka atkt atra atrc atre atrk atta atte attr baaa baad baak baar baat baba babb babe babr bac- baca bacc bace back bact bada badb badd bade badr baed baek baer bak- baka bake bakr bakt bar- bara barb barc bard bare bark barr bart bata batc bate batt bbad bbbb bbdd bbeb bbet bbrc bcaa bcar bcat bcbc bcca bccc bcda bcde bcec bcer bcet bcra bctc bd-r bdbc bddc bead beak bear beat beba bebb bebe beca beck beda bede beeb beed beek beer beet beka beke bera berc berd bere berk berr bert beta betc bete bett brab brac brad brae brak brat brca brcb brce brda brdt brea breb brec bred bree brek brer bret brka brkb brrr brtc btaa btcc btdt btec btek btrc btrt bttb c-cd caaa caab caac caat caba cabe cac- caca cacc cace cack cacr cada cadc cadd cade cadr caec caer caka cake cara carb carc card care cark carr cart cat- cata catb catc catd cate catt cbac cbar cbat cbbc cbca cbcc cbce cbcr cbct cbdb cbdc cbea cbec cbee cber cbet cbka cbkr cbrd cbre cbrt cbta cbtc ccaa ccab ccac ccad ccar ccat ccba ccbc ccca cccb cccc ccdc ccdr cced ccee ccra ccrc ccre ccrt cctb cctc cctt cd-e cd-r cdaa cdac cdad cdba cdda cddb cddr cdec cder cdre ceac cead cear ceat ceba cec- ceca cece cect ceda cedd cede cedt ceeb ceec ceke cer- cera cerc cerd cere cert cet- ceta cete ckac ckat ckbc ckbe ckck cker ckrc ckrd cktb crab crac crar crat crbc crca crcc crce crcr crda crdc cre- crea creb crec cred cree cret crkc crrt crtc ctab ctae ctba ctca ctec ctrc ctta daab daad daae daar daba dabb dabt daca dace dact dada dade daeb daer daka dake dara darb darc dard dare dark darr dart data date datr datt dbar dbcc dbtt dcbc dcca dccb dccc dcct dcdb dcra dcrk dctc dddd ddrc ddre deac dead deae deak dear deba debe debt dec- deca decc decd dece deck dect deda dedd dede deeb deed deek deer deet dek- deka deke der- dera derb derc dere derk derr deta dete detk detr dkba dkdc draa drab drac drad drak drar drat drba drbc drca drda drea dred dree drek dret drra dtaa dtac dtcc dted dtek eaba eaca eacc eada eadb eadd eaec eara earb eard eare eart eata eate ebac ebba ebbc ebbr ebcc ebed eber ecaa ecac ecad ecar ecat ecbc ecbe ecca eccb eccc ecce ecct ecdc eced ecka ecra ecrc ecrr ect- ecta ectc edac edad edar edca edda eddc edde ede- edea eder edra edta eeca eede eeea eeee eeka eeke eera eerc eeta eetc eete eka- ekab ekeb eked ekek eker eket ekka ekta erad erat erba erbb erbe erca ercc erce erda erde ereb erec ered erer eret erke erra errc erre erta etak etat etbc etbr etcc etec etee eter etka etra etre etta ette kaaa kaab kaak kaar kaat kaba kabb kabc kabd kabe kabr kacb kacc kacd kace kact kad- kada kadd kade kadr kadt kaer kaet kaka kakc kake kakk kakt kara karb kard kare kark karr kart kat- kata katb katc katd kate katk katr katt kbaa kbab kbac kbad kbae kbak kbar kbat kbba kbbb kbbc kbbd kbbe kbbk kbbr kbbt kbca kbcb kbce kbck kbcr kbct kbdb kbde kbdr kbeb kbec kbed kbee kbek kber kbet kbkb kbkk kbkr kbra kbrb kbrc kbrd kbre kbrk kbrt kbta kbtb kbtc kbte kbtk kbtr kbtt kcaa kcab kcac kcad kcar kcat kcba kcbc kcbd kcbk kcbr kcca kccb kccc kccd kcck kccr kcct kcda kcdc kcdd kcdr kcea kceb kcec kced kcee kcet kckc kckk kckr kcrc kcrr kcrt kcta kctb kctc kcte kdaa kdab kdac kdad kdae kdak kdar kdat kdbb kdbr kdca kdcc kdcd kdce kdcr kddb kddc kddd kddk kddr kdeb kdec kdet kdka kdkb kdkd kdkk kdkr kdkt kdrb kdta kdtd kdtr kea- kead keak kear keat keba kebb kebc kebe kebr kebt keca keck kecr keda kedb kedc kedd kede kedr kedt keed keek keer keet keka kekb kekc keke ker- kera kerb kerc kere kerk kerr kert ket- keta ketc ketd kete ketk ketr kett kkaa kkac kkar kkat kkba kkbb kkbd kkbe kkbr kkbt kkcb kkcd kkck kkcr kkct kkda kkdc kkdd kkdt kkea kked kkkk kkrb kkrc kkre kkrk kkrr kkrt kktc kktk krab krac krad krae krak krar krat krba krbb krbd krbe krbk krbr krbt krca krcb krcc krcd krce krda krdc krdd krde krdr krea kreb krec kred kree krek kret krka krkc krkd krke krkk krkr krrb krrc krre krrk krrr krrt krta krtc krtk krtr ktaa ktae ktak ktar ktat