c-cd cccc cccu ccdc ccdr ccgc ccgt ccoc ccod ccrc ccrg ccrt cctc cctt ccuc ccut cd-r cddr cdot cgcc cgcg cgro cgtu coco coct cocu codd cogo cood coot cor- corc cord corg coro corr cort cotc coto cott cotu coud cour cout crcc crcr crdc croc crod croo cror crot crrt crtc crud crug crut ctgu ctor ctot ctrc cucc curd curo curr curt cut- cutc cuto cutt dccc dcct dccu dcgo dctc dddd ddoc ddot ddrc doco doct docu dod- dodd dodg dodo dog- dogg dogo dogu dood door doot dorc dord doro dorr dort doru dotd doto dott douc doud doug dour dout drod drog drot drou drug drut druu dtcc dtor dtot duco duct dudd dudo dudu dugu duo- durg duro durt duru duur duut gc-c gccc gcrg gctc gdor gdrc gdrt gggg gocr godo gogo good goog goor goot gord gorg goro gorr gort gotd goto gott gou- goud goug gour gout grcc grdc groc grod grog groo gror grot grou grrr grtc grug grur grut gtco gtcr gudo gudu gugg gugu gurd gurg guro gurr gurt guru guto gutt gutu occc occt ocro ocrr oct- octo ocur oddd odoo odor odot odou odtu odur ogdc ogod ogog ogou ogro oocr oooo oord oort orco ordo ordu orgo oro- oror orot orro ortc orto otcd oto- otog otoo otor otro otto ottu otur oucc oudc our- ouro ourt out- outo ouu- rccc rcdc rcgc rcrd rcrg rctc rctg rdoc rgtr rocc roco rodd rodo rogg rogo rood roog roor root rorc roro rort roru rotc rotg roto rotr rott roud rout rrrr rtcc rtcg rtdt ruct rudd rudo rugg rurc rurd ruro ruru ruto rutt rutu ruud tccc tccu tcdd tctc tdor tgcc tgtc toco todd todo todt todu togo togr togt tood toor toot torc tord torg toro torr tort toru totc totd toto totr tott toug tour tout trcc troc trod trog troo trot trou trtc trtr truc trud trug trut truu tttt tucc tuco tudu tugg tugu tuor turc turd turg turo turr turt turu tuto tutt tutu tuuo ucdc ucdd ucrc ucut udoo udot ugcc ugcg uggo uggt ugod ugro ugur uguu uocc uor- urdu urgu uro- uroo urur urut utor utto uttu utug uuoc uuuu