c-cd cccc cccu ccdc ccdr ccgc ccoc ccod ccrc ccrg ccuc cd-r cddr cgcc cgcg cgro coco cocu codd cogo cood cor- corc cord corg coro corr coud cour crcc crcr crdc croc crod croo cror crud crug cucc curd curo curr dccc dccu dcgo dddd ddoc ddrc doco docu dod- dodd dodg dodo dog- dogg dogo dogu dood door dorc dord doro dorr doru douc doud doug dour drod drog drou drug druu duco dudd dudo dudu dugu duo- durg duro duru duur gc-c gccc gcrg gdor gdrc gggg gocr godo gogo good goog goor gord gorg goro gorr gou- goud goug gour grcc grdc groc grod grog groo gror grou grrr grug grur gudo gudu gugg gugu gurd gurg guro gurr guru occc ocro ocrr ocur oddd odoo odor odou odur ogdc ogod ogog ogou ogro oocr oooo oord orco ordo ordu orgo oro- oror orro oucc oudc our- ouro ouu- rccc rcdc rcgc rcrd rcrg rdoc rocc roco rodd rodo rogg rogo rood roog roor rorc roro roru roud rrrr rudd rudo rugg rurc rurd ruro ruru ruud ucdc ucdd ucrc udoo ugcc ugcg uggo ugod ugro ugur uguu uocc uor- urdu urgu uro- uroo urur uuoc uuuu