aaaa aaac aaad aaar aaca aacc aacd aacr aada aadc aara aarc aard acaa acac acad acar acca accc accd acda acdc acr- acra acrc acrr adaa adac adad adar adcc adda addc addd addr adra arac arad arar arc- arca arda ardc arr- arra arrc arrr c-cd caaa caac cac- caca cacc cacr cada cadc cadd cadr cara carc card carr ccaa ccac ccad ccar ccca cccc ccdc ccdr ccra ccrc cd-r cdaa cdac cdad cdda cddr crac crar crca crcc crcr crda crdc daad daar daca dada dara darc dard darr dcca dccc dcra dddd ddrc draa drac drad drar drca drda drra raad rac- raca racc rada radc radd radr rara rcac rccc rcdc rcrd rdac rrad rrrr