c-cd cccc cccs ccdc ccds cced ccee ccsd ccss cd-e cdcs cdec cdes cdex cdss cec- cece cecs cedd cede ceec cees cesc cese cess cexe cscc cscd csce cscs csec csee cssd csse cxxx dccc dccs dcds dcsc dcss dcxx dddd ddes ddss dec- decc decd dece decs dedd dede deed dees des- desc dese dess dex- dexe dscc dscs dssc dxcc dxdc dxds dxec dxed dxes dxss dxxx eccc ecce ecdc eced eces ecsc ecse ecss eddc edde edds ede- edes edex edss eecs eede eeee eees eese esce escs esds esdx esee eses esse exec exed exes sccc scce sccs scdc scds scec scee scsc scsd sdcc sddc sdds sdes sdsc sdss se-c se-d se-e se-s se-x sec- secc secd sece secs sede seds seec seed sees seex sesc sese sess sex- sexe sscc ssce sscs ssdc ssdd ssec ssee sses ssex sssc ssss sxde x-ed xces xdcc xexe xxxx