c-cd cccc ccdc ccdr ccoc ccod ccrc cd-r cddr coco codd cody cood cor- corc cord coro corr cory coyo coyr crcc crcr crdc croc crod croo cror croy cry- cryo cyc- cycc cyy- cyyc dc-y dccc dddd ddoc ddrc ddry doco dod- dodd dodo dody dood door dorc dord doro dorr dory doyo drod droy dry- dycd dydd dyo- dyoo dyor dyr- dyrc dyro dyyr occc ocro ocrr oddd oddy odoo odor odry odyr oocr oooo oord oory orco ordo oro- oror oroy orro orry rccc rcdc rcrd rcyc rdoc rocc roco rodd rodo rody rood roor rorc roro rory royd rrrr rydy yccc yodo yood yord yoro yory yoyo yyyy