aaaa aaac aaad aaae aaar aaca aacc aacd aace aacr aada aadc aade aaea aaec aara aarc aard aare acaa acac acad acae acar acca accc accd acce acda acdc acde ace- acea acec aced acer acr- acra acrc acre acrr adaa adac adad adae adar adcc adda addc addd adde addr adea adee ader adra adre aeac aede aeer aer- aera aerc aerd arac arad arae arar arax arc- arca arce arda ardc arde area arec ared aree arex arr- arra arrc arre arrr axar axce axed axer c-cd caaa caac cac- caca cacc cace cacr cada cadc cadd cade cadr caec caer caex cara carc card care carr carx caxa ccaa ccac ccad ccar ccca cccc ccdc ccdr cced ccee ccra ccrc ccre cd-e cd-r cdaa cdac cdad cdax cdda cddr cdec cder cdex cdre ceac cead cear cec- ceca cece ceda cedd cede ceec cer- cera cerc cerd cere cexe crac crar crax crca crcc crce crcr crda crdc cre- crea crec cred cree crex cxxx daad daae daar daca dace dada dade daer dara darc dard dare darr dcca dccc dcra dcxx dddd ddrc ddre deac dead deae dear dec- deca decc decd dece deda dedd dede deed deer der- dera derc dere derr dex- dexa dexe draa drac drad drar drax drca drda drea dred dree drra dxcc dxdc dxdr dxec dxed dxra dxrd dxre dxrr dxrx dxxr dxxx eaca eacc eada eadd eaec eara eard eare ecaa ecac ecad ecar ecca eccc ecce ecdc eced ecra ecrc ecrr edac edad edar edax edca edda eddc edde ede- edea eder edex edra eeca eede eeea eeee eera eerc er-x erad erca ercc erce erda erde erec ered erer erra errc erre exa- exda exec exed exer exrx raad rac- raca racc race rada radc radd rade radr radx raec raed raer rara rare raxa rcac rccc rcdc rcde rcrd rdac rder rea- reac read reae rear reca recc recd rece recr reda redc redd rede redr redx reed rera rerd rere rexx rrad rred rrrr x-ed xaar xace xara xare xdcc xeer xer- xera xexe xrcd xxxx