c-cd cccc ccdc ccdh ccdr cchr ccoc ccod ccrc cd-r cddr chch choc chod choh chok choo chor chrc chrd chro chrr ckch ckck ckco ckdo ckoc ckoo ckor ckrc ckrd coch cock coco codd coho cok- coko cood cooh cook cor- corc cord cork coro corr crcc crcr crdc crkc croc crod croh crok croo cror dccc dcrk dddd ddoc ddrc dhod dhor dkdc doch dock doco dod- dodd dodo dohc dohr doko dood dook door dorc dord dork doro dorr drod droh hccc hcch hcdr hcrd hdoc hdod hhhh hkcc hoch hock hocr hodh hodk hodr hoho hoko hood hook hoor horc hord hork horo horr hrdc hrod hrrc kccc kccd kcck kccr kcdc kcdd kcdr kchh kchk kcho kchr kckc kckk kcko kckr kcoh kcor kcrc kcrh kcro kcrr kdcc kdcd kdco kdcr kddc kddd kddk kddr kdkd kdkk kdko kdkr kdoc kdok kdro khcc khch khck khdc khdk khdr khhk khho khkk khkr khoc khok khor khrd khrk khro khrr kkcd kkch kkck kkco kkcr kkdc kkdd kkdo kkhh kkhk kkhr kkkk kkoh kkoo kkor kkrc kkrh kkrk kkro kkrr kocd koch kock kodk kodo kohd kohh koho kohr kokc kokh kokk koko kokr kooc kook kooo koor korc kord kork koro korr krcc krcd krch krco krdc krdd krdo krdr krhc krkc krkd krkh krkk krko krkr kroc krod kroh krok kroo kror krrc krrk krro krrr occc ocro ocrr oddd odoh odoo odor ohcc ohho ohoh ohok okko okok okor okro oocr ooho oooh oooo oord orch orco ordo orko oro- orok oror orro rccc rcdc rcrd rdoc rhoc rhod rhoh rocc roch rock roco rodd rodo rohr rokh rokk roko rokr rood rook roor rorc rork roro rrrr