c-cd cccc cccu cccv ccdc cced ccee ccoc ccod ccuc ccvo cd-e cdec cdex cdvd cec- cece ceco cedd cede cedo cedu ceec ceou ceux cevo cexe coce coco cocu codd code coed coex cood coud coue coux cove covo coxe cucc cuce cude cued cuve cvcc cxxv cxxx dccc dccu dccv dcvd dcxv dcxx dddd ddoc dec- decc decd dece deco dedd dede dedo dedu deed deev deue deux deve devo dex- dexe do-x doce doco docu dod- dodd dode dodo dood douc doud doue doux dove duce duco dudd dude dudo dudu duo- duve dxcc dxco dxcv dxdc dxec dxed dxoc dxue dxxx eccc ecce ecco ecdc eced eco- ecod ecou eddc edde eddo ede- edex edoc edod edou educ edve eede eedu eeee eeoc eocd eode eoux eucd eude evex evoe evoo exco exec exed exo- exod o-eo occc oce oced ocee oddd oded odeo odex odoo odou oec- oecc oedo oeec oooo oucc oudc oude oued ouu- ovde ovee ovo- ovod ovoo oxo- oxox oxud oxxo ucdc ucdd udev udoo udox uocc uovo uuoc uuuu uv-c uvvu uxue vdcc vdec vecc vedc vede vedo veve vevo vexx voce vode vodo voeu vooc voud voue voxx vuco vudu vvvv x-ed xdcc xdvd xexe xoco xove xoxo xuxu xxvc xxxo xxxv xxxx