a-ak aaaa aaac aaad aaae aaaf aaar aaca aacc aacd aace aacf aack aacr aada aadc aade aaea aaec aafa aafc aafd aaff aaka aake aara aarc aard aare acaa acac acad acae acar acca accc accd acce accf acda acdc acde acdf ace- acea acec aced acek acer acfc acfd acfe ackd acke acr- acra acrc acre acrr adaa adac adad adae adak adar adcc adda addc addd adde addr adea adee ader adfa adfc adra adre aeac aeaf aede aeer aeka aer- aera aerc aerd afaa afad afak afar afca afcc afdc afee afek afer affa affc afka afkr afr- afra afrc afre akaa akae akar akca aked akee aker akka akr- akra akre arac arad arae araf arak arar arc- arca arce arda ardc arde ardf area arec ared aree aref arek arfa arfc arff arka arke arr- arra arrc arre arrk arrr c-cd caaa caac caaf cac- caca cacc cace cack cacr cada cadc cadd cade cadr caec caer cafa cafc cafe caff caka cake cara carc card care carf cark carr ccaa ccac ccad ccaf ccar ccca cccc cccf ccdc ccdf ccdr cced ccee ccfa ccfc ccfd ccff ccra ccrc ccre ccrf cd-e cd-r cdaa cdac cdad cdda cddr cdec cdef cder cdfa cdfe cdre ceac cead cear cec- ceca cece ceda cedd cede ceec cef- cefa cefc ceke cer- cera cerc cerd cere cerf cfaa cfac cfae cfar cfca cfcf cfda cffr cfra cfre ckac ckck cker ckfr ckrc ckrd crac craf crar crca crcc crce crcr crda crdc cre- crea crec cred cree crfc crkc daad daae daar daca dace dada dade daer dafa dafc dafe daff daka dake dara darc dard dare darf dark darr dcca dccc dcfc dcra dcrk dddd ddrc ddre deac dead deae deaf deak dear dec- deca decc decd dece deck deda dedd dede deed deef deek deer defe deff dek- deka deke der- dera derc dere derf derk derr dfaf dfcc dfer dffa dfrf dkdc draa drac drad draf drak drar drca drda drea dred dree dref drek drfc drra eaaf eaca eacc eada eadd eaec eara eard eare ecaa ecac ecad ecar ecca eccc ecce ecdc ecdf eced ecef ecfa ecfc ecfr ecka ecra ecrc ecrf ecrr edac edad edar edca edda eddc edde ede- edea eder edfa edra eeca eede eeea eeee eefa eefe eeka eeke eera eerc efca efda effa efke eka- eked ekek eker ekfc ekka erad eraf erca ercc erce erda erde erdf erec ered erer erfc erke erra errc erre f--k faaa faac faad faca facc face fack fada fadd fade fafa fafc fafe faff fake fara farc fard fare fark farr fcar fcca fccf fcda fcra fdca fead feaf feak fear fece feck feda fede feed feek feer fefc fefe feff feke fera ferc ferd fere ferk ferr ffar ffcc ffee ffff ffrr frac frad frae frak frcc frea fred free frfc kaaa kaaf kaak kaar kacc kacd kace kad- kada kadd kade kadf kadr kaer kafa kafc kafe kaff kafr kaka kakc kake kakk kara kard kare karf kark karr kcaa kcac kcad kcar kcca kccc kccd kcck kccr kcda kcdc kcdd kcdr kcea kcec kced kcee kcfa kcfc kcfd kckc kckf kckk kckr kcrc kcrr kdaa kdac kdad kdae kdaf kdak kdar kdca kdcc kdcd kdce kdcr kddc kddd kddf kddk kddr kdec kdef kdfc kdfr kdka kdkd kdkk kdkr kdrf kea- kead keak kear keca keck kecr keda kedc kedd kede kedr keed keef keek keer kefa kefc keff kefr keka kekc keke ker- kera kerc kere kerf kerk kerr kfac kfar kfcd kfcf kfcr kfda kfed kfer kffa kfff kffk kfka kfra kfrc kfrd kfre kfrr kkaa kkac kkar kkcd kkck kkcr kkda kkdc kkdd kkea kked kkfr kkkk kkrc kkre kkrf kkrk kkrr krac krad krae krak krar krca krcc krcd krce krda krdc krdd krde krdr krea krec kred kree kref krek krfc krfd krfe krff krka krkc krkd krke krkk krkr krrc krre krrf krrk krrr raad raaf raak rac- raca racc race rack rada radc radd rade radr raec raed raef raer rafa rafc rafe raff raka rake rakk rara rare rarf rark rcac rcaf rccc rcdc rcde rcfc rcrd rdac rder rdfa rea- reac read reae reaf reak rear reca recc recd rece reck recr reda redc redd rede redr reed reef reek refd refe reff refr reka reke rera rerd rere rfae rfef rffc rkkf rrad rred rrfc rrrr