c-cd cccc cccu cccv ccdc ccdr cced ccee ccrc ccre ccuc cd-e cd-r cddr cdec cder cdre cdvd cec- cece cedd cede cedu ceec cer- cerc cerd cere crcc crce crcr crdc cre- crec cred cree creu crud crue cucc cuce cude cued cuer curd cure curr cuve cvcc cver cvrd cvrr dccc dccu dccv dcvd dddd ddrc ddre dec- decc decd dece dedd dede dedu deed deer deev der- derc dere derr derv deue deur deve dred dree drev drue druu druv duce dudd dude dudu duer dure duru duur duve dvdr eccc ecce ecdc eced ecrc ecrr ecru ecrv eddc edde ede- eder edru educ edur edve eede eedu eeee eerc ercc erce erde erec ered erer erev errc erre eruc erur eruv erve eucd eude euer eur- eurc eure ever evre rccc rcdc rcde rcrd rcuv rcvr rder rdev recc recd rece recr recu redc redd rede redr redu reed reev rerd rere reru reue reuu revd reve rred rrrr ruce rudd rude rued ruer rurc rurd rure ruru ruud ruve ruvu rv-c rved rver ucdc ucdd ucrc uder udev urde urdu ure- ured urre urur urve uuuu uv-c uver uvrd uvvu vdcc vdec vder vdre vecc vedc vede veer ver- verd vere veur veve vred vudu vver vvvv