c-cd cccc ccdc cced ccee cctc cctt cd-e cdec cdex cec- cece cect cedd cede cedt ceec cet- cete cexe ctec cxxx dccc dcct dctc dcxx dddd dec- decc decd dece dect dedd dede deed deet dete dex- dexe dext dtcc dted dttx dtxt dxcc dxdc dxec dxed dxxx eccc ecce ecct ecdc eced ect- ectc eddc edde ede- edex eede eeee eetc eete eext etcc etec etee ette exec exed exte tccc tcdd tctc tect tedd tede tedx teec teed teet tete tett tetx text tttt x-ed xdcc xexe xxxx