c-cd cccc cccu ccdc ccdr ccoc ccod ccrc ccrt cctc cctt ccuc ccut cd-r cddr cdot coco coct cocu codd cood coot cor- corc cord coro corr cort cotc coto cott cotu coud cour cout crcc crcr crdc croc crod croo cror crot crrt crtc crud crut ctor ctot ctrc cucc curd curo curr curt cut- cutc cuto cutt dccc dcct dccu dctc dddd ddoc ddot ddrc doco doct docu dod- dodd dodo dood door doot dorc dord doro dorr dort doru dotd doto dott douc doud dour dout drod drot drou drut druu dtcc dtor dtot duco duct dudd dudo dudu duo- duro durt duru duur duut occc occt ocro ocrr oct- octo ocur oddd odoo odor odot odou odtu odur oocr oooo oord oort orco ordo ordu oro- oror orot orro ortc orto otcd oto- otoo otor otro otto ottu otur oucc oudc our- ouro ourt out- outo ouu- rccc rcdc rcrd rctc rdoc rocc roco rodd rodo rood roor root rorc roro rort roru rotc roto rotr rott roud rout rrrr rtcc rtdt ruct rudd rudo rurc rurd ruro ruru ruto rutt rutu ruud tccc tccu tcdd tctc tdor toco todd todo todt todu tood toor toot torc tord toro torr tort toru totc totd toto totr tott tour tout trcc troc trod troo trot trou trtc trtr truc trud trut truu tttt tucc tuco tudu tuor turc turd turo turr turt turu tuto tutt tutu tuuo ucdc ucdd ucrc ucut udoo udot uocc uor- urdu uro- uroo urur urut utor utto uttu uuoc uuuu