a-do aaaa aaac aaad aaap aaar aaca aacc aacd aaco aacp aacr aada aadc aaoo aapa aapc aapo aara aarc aard aaro aarp acaa acac acad acap acar acca accc accd acco accp acda acdc acdp acoa acod acop acor acpa acpd acpr acr- acra acrc acro acrr adaa adac adad adao adap adar adcc adda addc addd addo addr adoc adod adoo ador adp- adra adro aoca aopo aora apac apao apap apar apca apcc apcd apco apcr apda apdd apo- apoc apod apoo apop apor appa appc appd appr apra aprc apro arac arad arap arar arc- arca arco arda ardc ardo aroa arod aroo aror arpa arr- arra arrc arro arrr c-cd caaa caac caap cac- caca cacc caco cacr cada cadc cadd cado cadr caod caor capa capc capd capo capp cara carc card caro carp carr ccaa ccac ccad ccap ccar ccca cccc cccp ccdc ccdp ccdr ccoc ccod ccpa ccpp ccpr ccra ccrc ccrp cd-r cdaa cdac cdad cdda cddr coad coca coco cocp coda codd cood coop copa copd copo copp copr cor- cora corc cord coro corp corr cpaa cpac cpad cpap cpca cppa cppd crac crap crar crca crcc crcr crda crdc croc crod croo crop cror crpc daad daap daar daca dada dado dapa dapp dara darc dard daro darp darr dcca dccc dccp dcop dcpo dcra dddd ddoc ddpo ddrc doap doar doca doco dod- doda dodd dodo dood doop door dopa dopo dopp dopr dora dorc dord doro dorp dorr dpaa dpac dpcp dppa dppc draa drac drad drap drar drca drda drod drop drra oara ocac ocad ocap occa occc ocpa ocpd ocpp ocra ocro ocrr odac odda oddd odoo odop odor odra odrp ooaa oocr ooda oooo oora oord opap opar opca opo- opor oppa oppo opra orac orad orao orar orca orco orda ordo oro- oror orpc orra orro paap paar paca pacd paco pada padd pado paoc papa papp papr par- para parc pard paro parp parr pcaa pcad pcap pcca pccc pcoa pcod pcpp pcra pcrc pcrd pdac pdca pdcp pdoc pdpa pdpr pdrc poad poar poca pocd poco pod- poda podd podo pood poop poor pop- popa popc popo popp pora porc poro porr ppac ppad ppap ppar ppcc ppcd ppoa ppod pppa pppd pppo pppp pprc prad prao prar prca prcc prcd prcp pro- proa proc prod proo prop prpd prrd raad rac- raca racc raco rada radc radd rado radr raoc raop rapa rapc rapd rapp rara raro rcac rccc rcdc rcpd rcpo rcrd rdac rdap rdoc rdpc road roap roar roca rocc roco roda rodd rodo rood roop roor ropa ropo rora rorc roro rpca rpdp rrad rrrr