-ene -one bbbb bbdd bbdo bbeb bbfc bbfn bcbc bccc bcde bcec bcfc bcof bdbc bddc bebb bebe bebo bede bedo beeb beed beef been befe beff befo bend bene benn beno beo- beod beof beon bnoc bobb bobe bobo boce boco bodb bode bodo boec boee boef boen boeo bofd bofe boff bonc bond bone bonn bono boob booc bood booe boof boon c-bo c-cd cbbc cbcc cbce cbcn cbdb cbdc cbdn cbdo cbec cbee cbef cbfb cbfc cbnd ccbc ccbn cccb cccc cccf ccdc ccdf ccdn cced ccee ccfc ccfd ccff ccnb ccnc ccne ccnf ccob ccoc ccod cd-e cdbf cddb cdec cdef cdfe cdnb cdnc cdnf cdon cec- cece ceco cedd cede cedo ceeb ceec cef- cefc cefn cen- cend cene ceno cfbc cfbn cfcb cfcf cfcn cfco cffb cfnb cnbc cnco cndd cobb cobe cobo coce coco codd code coed coen cofc cofe coff con- conc cond cone conf conn cono coob cood coof coon d-bo dbcc dbfc dbfo dcbc dccb dccc dcdb dcfc dcon dddd ddoc debe dec- decc decd dece deco dedd dede dedo deeb deed deef deen defe deff defn defo dene denn deno deon dfcc dfco dfoe dnce dnoc dobb dobe doce doco dod- dodd dode dodo doen doff donc dond done donn dono doob dood doof doon ebbc ebbo ebcc ebed eben ebfc ebno eboe ebon eboo ecbc ecbe eccb eccc ecce ecco ecdc ecdf eced ecef ecfc ecne eco- ecod econ eddc edde eddo ede- eden edno edoc edod edon eede eeee eefe eefn eend eeoc efco efen efeo efon enb- enbn ence enco end- ende endo ened enee eneo enfb ennc enne eno- enoc enoe enon eocd eode eone fccf fdoc febo fece fede fedn feeb feed feen fefc fefe feff fefo fend fene fenn feod feof feon ffcc ffee ffff fndd fndn foce foco fode foed fofo fond fone fono food foof foon nbbc nbbo nbcc nbco nbfc ncbc nccc nccf nccn ncdc ncdn ncec nced ncee ncef ncen ncfc ncfe ncnc ncnd ncoc ndcc nddb ndde nddo ndoc nebb nebe nebn nebo necc nece neco nedc nedd nede nedo neeb need neef neen nefd nefe neff nend nene neno neo- neoc neod neon neoo nfdc nfff nfon nndb nnnn nobc nobo noce noco node nodo noed non- none nonn nono noo- noob noon nooo o-eo obbo obec obed oben oboe obon ocbc occc occn oce oced ocee ocef ocon odbo oddd oded oden odeo odnb odon odoo oec- oecc oedn oedo oeec oen- oeno ofen off- offc offe offo ofno onc- oncd once oncf onco onde ondo one- oneb onec oned onee oneo onne onno onod onon oobe ooff oone oooo