-ene c-cd cccc ccdc ccdn cced ccee ccnc ccne cctc cctt cd-e cdec cdex cdnc cec- cece cect cedd cede cedt ceec cen- cend cene cent cet- cete cexe cndd cnet cnex cntc ctec cten ctne cttn cxxx dccc dcct dctc dcxx dddd dec- decc decd dece dect dedd dede deed deen deet dene denn dent dete detn dex- dexe dext dnce dnet dntt dtcc dted dten dttx dtxt dxcc dxdc dxec dxed dxnd dxxx eccc ecce ecct ecdc eced ecne ect- ectc eddc edde ede- eden edex eede eeee eend eent eetc eete eext ence end- ende ened enee ennc enne ent- entd ente etcc etec etee eten etne ette ettn exec exed exen exte nccc nccn ncct ncdc ncdn ncec nced ncee ncen ncnc ncnd nctc ncte ndcc ndde ndnt ndtc necc nece nect nedc nedd nede need neen neet nend nene nent net- netd nete nett nexe next nexx nnnn nntn ntcc ntnd nxdn tccc tcdd tcnn tctc tect tedd tede tedx teec teed teen teet tenc tend tene tenn tent tete tett tetx text tncc tndd ttcn tten tttt txcn txen x-ed xdcc xen- xene xenn xexe xnee xnet xtnd xxxx