a-do aaaa aaac aaad aaar aaca aacc aacd aaco aacr aada aadc aaoo aara aarc aard aaro acaa acac acad acar acca accc accd acco acda acdc acoa acod acor acr- acra acrc acro acrr adaa adac adad adao adar adcc adda addc addd addo addr adoc adod adoo ador adox adra adro aoca aora arac arad arar arax arc- arca arco arda ardc ardo aroa arod aroo aror arr- arra arrc arro arrr axar axo- axoa axxo c-cd caaa caac cac- caca cacc caco cacr cada cadc cadd cado cadr caod caor cara carc card caro carr carx caxa ccaa ccac ccad ccar ccca cccc ccdc ccdr ccoc ccod ccra ccrc cd-r cdaa cdac cdad cdax cdda cddr coad coax coca coco coda codd cood cor- cora corc cord coro corr coxa crac crar crax crca crcc crcr crda crdc croc crod croo cror cxro cxxx daad daar daca dada dado dara darc dard daro darr dcca dccc dcra dcxx dddd ddoc ddrc do-x doar doca doco dod- doda dodd dodo dood door dora dorc dord doro dorr doxa draa drac drad drar drax drca drda drod drra dxcc dxco dxdc dxdr dxoc dxra dxrd dxrr dxrx dxxr dxxx oara ocac ocad occa occc ocra ocro ocrr odac odax odda oddd odoo odor odra ooaa oocr ooda oooo oora oord orac orad orao orar orca orco orda ordo oro- oror orra orro oxa- oxo- oxox oxxo raad rac- raca racc raco rada radc radd rado radr radx raoc rara raro raxa rcac rccc rcdc rcrd rdac rdoc road roar roca rocc roco roda rodd rodo rood roor roox rora rorc roro roxa roxo rrad rrrr xaar xado xara xdcc xoca xoco xoro xoxo xrcd xrod xxxo xxxx