-ene bbbb bbdd bbeb bcbc bccc bcde bcec bdbc bddc bebb bebe bede beeb beed been bend bene benn c-cd cbbc cbcc cbce cbcn cbdb cbdc cbdn cbec cbee cbnd ccbc ccbn cccb cccc ccdc ccdn cced ccee ccnb ccnc ccne cd-e cddb cdec cdnb cdnc cec- cece cedd cede ceeb ceec cen- cend cene cnbc cndd dbcc dcbc dccb dccc dcdb dddd debe dec- decc decd dece dedd dede deeb deed deen dene denn dnce ebbc ebcc ebed eben ecbc ecbe eccb eccc ecce ecdc eced ecne eddc edde ede- eden eede eeee eend enb- enbn ence end- ende ened enee ennc enne nbbc nbcc ncbc nccc nccn ncdc ncdn ncec nced ncee ncen ncnc ncnd ndcc nddb ndde nebb nebe nebn necc nece nedc nedd nede neeb need neen nend nene nndb nnnn