-ene c-cd cccc ccdc ccdn cced ccee ccgc ccnc ccne cd-e cdec cdnc cec- cece cedd cede ceec cege cen- cend cene ceng cgcc cgcg cged cndd dccc dddd dec- decc decd dece dedd dede deed deeg deen dege dene deng denn dgeg dgge dnce eccc ecce ecdc eced ecne eddc edde ede- eden edge eede eeee eend eeng egcc egcg egec egee egge egne ence end- ende ened enee eneg enge engg ennc enne gc-c gccc gece gedd gede geed geen gege gegg gen- genc gend gene geng genn gggg gncc gngc nccc nccn ncdc ncdn ncec nced ncee ncen ncnc ncnd ndcc ndde necc nece nedc nedd nede need neen nege nend nene neng ngdc nged ngen nngn nnnn