-ene -yne c-cd cccc ccdc ccdn cced ccee ccnc ccne ccny cd-e cdec cdnc cec- cece cedd cede cedy ceec cen- cend cene ceny cndd cyc- cycc cyen cyn- cyne cyy- cyyc cyyn dc-y dccc dddd dec- decc decd dece dedd dede deed deen dene denn deny deye deyn dnce dycd dyce dydd dyde dyed dyen dyey dync dyne dyny eccc ecce ecdc eced ecne ecyd eddc edde eddy ede- eden edny eede eeee eend eeny ence ency end- ende endy ened enee eney ennc enne enny enye eyec eyed eyen eyey eynd eyne nccc nccn ncdc ncdn ncec nced ncee ncen ncnc ncnd ndcc ndde necc nece necy nedc nedd nede nedy need neen nend nene neye neyn nnnn nycc nyce nycy nyen nyne nyny yccc ycee ydee yedd yede yeed yeen yenc yend yene yeye ynce ynde ynne yyyy