a-ak aaaa aaac aaad aaae aaar aaca aacc aacd aace aack aacr aada aadc aade aaea aaec aaka aake aara aarc aard aare acaa acac acad acae acar acca accc accd acce acda acdc acde ace- acea acec aced acek acer ackd acke acr- acra acrc acre acrr adaa adac adad adae adak adar adcc adda addc addd adde addr adea adee ader adra adre aeac aede aeer aeka aer- aera aerc aerd akaa akae akar akca aked akee aker akka akr- akra akre arac arad arae arak arar arc- arca arce arda ardc arde area arec ared aree arek arka arke arr- arra arrc arre arrk arrr c-cd caaa caac cac- caca cacc cace cack cacr cada cadc cadd cade cadr caec caer caka cake cara carc card care cark carr ccaa ccac ccad ccar ccca cccc ccdc ccdr cced ccee ccra ccrc ccre cd-e cd-r cdaa cdac cdad cdda cddr cdec cder cdre ceac cead cear cec- ceca cece ceda cedd cede ceec ceke cer- cera cerc cerd cere ckac ckck cker ckrc ckrd crac crar crca crcc crce crcr crda crdc cre- crea crec cred cree crkc daad daae daar daca dace dada dade daer daka dake dara darc dard dare dark darr dcca dccc dcra dcrk dddd ddrc ddre deac dead deae deak dear dec- deca decc decd dece deck deda dedd dede deed deek deer dek- deka deke der- dera derc dere derk derr dkdc draa drac drad drak drar drca drda drea dred dree drek drra eaca eacc eada eadd eaec eara eard eare ecaa ecac ecad ecar ecca eccc ecce ecdc eced ecka ecra ecrc ecrr edac edad edar edca edda eddc edde ede- edea eder edra eeca eede eeea eeee eeka eeke eera eerc eka- eked ekek eker ekka erad erca ercc erce erda erde erec ered erer erke erra errc erre kaaa kaak kaar kacc kacd kace kad- kada kadd kade kadr kaer kaka kakc kake kakk kara kard kare kark karr kcaa kcac kcad kcar kcca kccc kccd kcck kccr kcda kcdc kcdd kcdr kcea kcec kced kcee kckc kckk kckr kcrc kcrr kdaa kdac kdad kdae kdak kdar kdca kdcc kdcd kdce kdcr kddc kddd kddk kddr kdec kdka kdkd kdkk kdkr kea- kead keak kear keca keck kecr keda kedc kedd kede kedr keed keek keer keka kekc keke ker- kera kerc kere kerk kerr kkaa kkac kkar kkcd kkck kkcr kkda kkdc kkdd kkea kked kkkk kkrc kkre kkrk kkrr krac krad krae krak krar krca krcc krcd krce krda krdc krdd krde krdr krea krec kred kree krek krka krkc krkd krke krkk krkr krrc krre krrk krrr raad raak rac- raca racc race rack rada radc radd rade radr raec raed raer raka rake rakk rara rare rark rcac rccc rcdc rcde rcrd rdac rder rea- reac read reae reak rear reca recc recd rece reck recr reda redc redd rede redr reed reek reka reke rera rerd rere rrad rred rrrr