-ene c-cd cccc ccdc ccdn ccdr cced ccee ccnc ccne ccnr ccrc ccre ccrt cctc cctt cd-e cd-r cddr cdec cder cdnc cdre cec- cece cect cedd cede cedt ceec cen- cend cene cent cer- cerc cerd cere cern cert cet- cete cndd cnet cnrc cnrr cnrt cntc cntr crcc crce crcr crdc cre- crec cred cree cren cret crne crrt crtc ctec cten ctne ctrc ctrn cttn dccc dcct dctc dddd ddrc ddre dec- decc decd dece dect dedd dede deed deen deer deet dene denn dent der- derc dere dern derr dete detn detr dnce dner dnet dnrc dntt dred dree dren dret dtcc dted dten eccc ecce ecct ecdc eced ecne ecrc ecrr ect- ectc eddc edde ede- eden eder edrn eede eeee eend eent eerc eetc eete ence end- ende ened enee ener ennc enne ent- entd ente entr ercc erce erde erec ered eren erer eret erne errc erre etcc etec etee eten eter etne etnr etre ette ettn nccc nccn nccr ncct ncdc ncdn ncdr ncec nced ncee ncen ncer ncnc ncnd ncrc ncre nctc ncte nctr ndcc ndde nder ndnt ndrc ndre ndtc necc nece necr nect nedc nedd nede need neen neer neet nend nene nent nerc nerd nere nerr nert net- netd nete nett nnnn nntn nrdc nren nrrc nrrd ntcc nter ntnd ntrc nttr rccc rcdc rcde rcet rcnr rcrd rctc rder recc recd rece recr rect redc redd rede redr reed reen reet rend rene renn rent rerd rere rert retd rete retr rett rndc rnnt rntd rred rrrr rtcc rtce rtdt rtee rtnd tccc tcdd tcnn tctc tecr tect tedd tede teec teed teen teer teet tenc tend tene tenn tent ter- terc tere tern terr tete tetr tett tncc tndd trcc tre- trec tred tree tren tret trtc trte trtr ttcn tten tter tttt