aaaa aaac aaad aaap aaar aaca aacc aacd aacp aacr aada aadc aapa aapc aara aarc aard aarp acaa acac acad acap acar acca accc accd accp acda acdc acdp acpa acpd acpr acr- acra acrc acrr adaa adac adad adap adar adcc adda addc addd addr adp- adra apac apap apar apca apcc apcd apcr apda apdd appa appc appd appr apra aprc arac arad arap arar arc- arca arda ardc arpa arr- arra arrc arrr c-cd caaa caac caap cac- caca cacc cacr cada cadc cadd cadr capa capc capd capp cara carc card carp carr ccaa ccac ccad ccap ccar ccca cccc cccp ccdc ccdp ccdr ccpa ccpp ccpr ccra ccrc ccrp cd-r cdaa cdac cdad cdda cddr cpaa cpac cpad cpap cpca cppa cppd crac crap crar crca crcc crcr crda crdc crpc daad daap daar daca dada dapa dapp dara darc dard darp darr dcca dccc dccp dcra dddd ddrc dpaa dpac dpcp dppa dppc draa drac drad drap drar drca drda drra paap paar paca pacd pada padd papa papp papr par- para parc pard parp parr pcaa pcad pcap pcca pccc pcpp pcra pcrc pcrd pdac pdca pdcp pdpa pdpr pdrc ppac ppad ppap ppar ppcc ppcd pppa pppd pppp pprc prad prar prca prcc prcd prcp prpd prrd raad rac- raca racc rada radc radd radr rapa rapc rapd rapp rara rcac rccc rcdc rcpd rcrd rdac rdap rdpc rpca rpdp rrad rrrr