c-cd cccc cccf ccdc ccdf ccdr ccfc ccfd ccff ccoc ccod ccrc ccrf cd-r cddr cfcf cfco cffr cfor ckck ckco ckdo ckfr ckoc ckoo ckor ckrc ckrd cock coco codd cofc coff cok- coko cood coof cook cor- corc cord corf cork coro corr crcc crcr crdc crfc crkc croc crod crok croo cror dccc dcfc dcrk dddd ddoc ddrc dfcc dfco dfrf dkdc dock doco dod- dodd dodo doff doko dood doof dook door dorc dord dorf dork doro dorr drfc drod drof f--k fccf fdoc ffcc ffff ffrr fock foco fofo food foof fook for- ford fork foro forr frcc frfc kccc kccd kcck kccr kcdc kcdd kcdr kcfc kcfd kcfo kckc kckf kckk kcko kckr kcof kcor kcrc kcro kcrr kdcc kdcd kdco kdcr kddc kddd kddf kddk kddr kdfc kdfo kdfr kdkd kdkk kdko kdkr kdoc kdok kdrf kdro kfcd kfcf kfco kfcr kfff kffk kfok kfoo kfor kfrc kfrd kfro kfrr kkcd kkck kkco kkcr kkdc kkdd kkdo kkfr kkkk kkoo kkor kkrc kkrf kkrk kkro kkrr kocd kocf kock kodk kodo kofc koff kofk kofo kokc kokf kokk koko kokr kooc kook kooo koor korc kord korf kork koro korr krcc krcd krco krdc krdd krdo krdr krfc krfd krff krfo krkc krkd krkk krko krkr kroc krod krof krok kroo kror krrc krrf krrk krro krrr occc ocro ocrr oddd odoo odor ofcr ofdr off- offc offo offr ofor okko okok okor okro oocr ooff oooo oord orco ordo orff orko oro- orof orok oror orro rccc rcdc rcfc rcrd rdoc rffc rkkf rocc rock roco rodd rodo rofc roff rofo rokk roko rokr rood roof rook roor rorc rork roro rrfc rrrr