-ene c-cd cccc cccv ccdc ccdn ccdr cced ccee ccnc ccne ccnr ccrc ccre cd-e cd-r cddr cdec cder cdnc cdre cdvd cec- cece cedd cede ceec cen- cend cene cer- cerc cerd cere cern cndd cnrc cnrr crcc crce crcr crdc cre- crec cred cree cren crne cvcc cven cver cvrd cvrr dccc dccv dcvd dddd ddrc ddre dec- decc decd dece dedd dede deed deen deer deev dene denn der- derc dere dern derr derv deve dnce dner dnev dnrc dred dree dren drev drvn dvdr eccc ecce ecdc eced ecne ecrc ecrr ecrv eddc edde ede- eden eder edrn edve eede eeee eend eerc eevn en-v ence end- ende ened enee ener ennc enne ercc erce erde erec ered eren erer erev erne errc erre erve even ever evre nccc nccn nccr ncdc ncdn ncdr ncec nced ncee ncen ncer ncnc ncnd ncrc ncre ndcc ndde nder ndrc ndre necc nece necr nedc nedd nede need neen neer neev nend nene nerc nerd nere nerr nerv neve nnnn nrdc nren nrrc nrrd nvcc rccc rcdc rcde rcnr rcrd rcvr rder rdev recc recd rece recr redc redd rede redr reed reen reev rend rene renn rerd rere revd reve rndc rred rrrr rv-c rved rver vdcc vdec vder vdre vecc vedc vede veen veer ven- vend vene venn ver- verd vere vern veve vred vrnn vver vvvv