-ene bbbb bbdd bbeb bbrc bcbc bccc bcde bcec bcer bd-r bdbc bddc bebb bebe bede beeb beed been beer bend bene benn berc berd bere bern berr bner bnrr brcb brce breb brec bred bree bren brer brrr c-cd cbbc cbcc cbce cbcn cbcr cbdb cbdc cbdn cbec cbee cber cbnd cbrd cbre cbrn ccbc ccbn cccb cccc ccdc ccdn ccdr cced ccee ccnb ccnc ccne ccnr ccrc ccre cd-e cd-r cddb cddr cdec cder cdnb cdnc cdre cec- cece cedd cede ceeb ceec cen- cend cene cer- cerc cerd cere cern cnbc cndd cnrc cnrr crbc crcc crce crcr crdc cre- creb crec cred cree cren crne dbcc dbrn dcbc dccb dccc dcdb dddd ddrc ddre debe dec- decc decd dece dedd dede deeb deed deen deer dene denn der- derb derc dere dern derr dnce dner dnrc drbc dred dree dren ebbc ebbr ebcc ebed eben eber ecbc ecbe eccb eccc ecce ecdc eced ecne ecrc ecrr eddc edde ede- eden eder edrn eede eeee eend eerc enb- enbn enbr ence end- ende ened enee ener ennc enne erbb erbe ercc erce erde ereb erec ered eren erer erne errc erre nbbc nbcc nber ncbc nccc nccn nccr ncdc ncdn ncdr ncec nced ncee ncen ncer ncnc ncnd ncrc ncre ndcc nddb ndde nder ndrc ndre nebb nebe nebn nebr necc nece necr nedc nedd nede neeb need neen neer nend nene nerc nerd nere nerr nndb nnnn nrdc nren nrrc nrrd rbbb rbbr rcbc rccb rccc rcdc rcde rcnr rcrd rder rebb rebe recc recd rece recr redc redd rede redr reeb reed reen rend rene renn rerd rere rnbr rndc rred rrrr