-ene -one cccc cccf cccv ccee ccfc ccff ccnc ccne ccnf ccnr ccoc ccrc ccre ccrf ccvo cec- cece ceco ceec cef- cefc cefn cen- cene ceno ceor cer- cerc cere cerf cern cero cevo cfcf cfcn cfco cffr cfnr cfor cfre cfrn cnco cnrc cnrr coce coco coen cofc cofe coff con- conc cone conf conn cono conv coof coon cor- corc core corf corn coro corr cove covo crcc crce crcr cre- crec cree cren creo crfc crne croc croe cron croo cror cvcc cven cver cvfr cvrr eccc ecce ecco ecef ecfc ecfr ecne eco- econ ecrc ecrf ecrr ecrv eeee eefe eefn eeoc eerc eero eevn efco efen efeo efon efor en-v ence enco enee eneo ener ennc enne eno- enoc enoe enon eone eore ercc erce erec eren erer erev erfc erne erno eroc eroe eron eroo errc erre erro erve even ever evoe evon evoo evre fccf fece feen feer fefc fefe feff fefo fene fenn feof feon ferc fere fern fero ferr ferv feve fevr ffcc ffee ffff ffrr foce foco foer fofo fone fono foof foon for- fore forn foro forr fove fr-v frcc frcn free fren freo frfc froe fron nccc nccf nccn nccr ncec ncee ncef ncen ncer ncfc ncfe ncnc ncoc ncor ncrc ncre necc nece neco necr neef neen neer neev nefe neff nene neno neo- neoc neon neoo nerc nere nerf nero nerr nerv neve nevo nfer nfff nfon nnnn noce noco noer non- none nonn nono noo- noon nooo noor noov nor- norc nore norf norn noro norr norv nov- nove novo nren nrfc nroc nron nrrc nvcc nvfc nvfr o-eo occc occn oce ocee ocef ocon ocre ocro ocrr oec- oecc oeec oen- oeno oere ofcr ofen ofer off- offc offe offo offr ofno ofor ofre onc- once oncf onco one- onec onee oneo oner onne onno onon onor oocr ooer ooff oone oooo oore orce orco ore- orec oren oreo orer orfe orff ornc orne orno oro- oroe orof oron oror orro orve orvr ovee oven over ovo- ovon ovoo ovre rccc rcfc rcnr rcon rcvr recc rece recr reef reen reev refe reff refn refr rene renn reno reof rere rero reve revo rfef rffc rnco rocc roce roco roen roer roev rofc rofe roff rofo ronc rone rono roof roon roor rorc rore roro rove rovo rrfc rrrr rv-c rver vcon vecc veen veer ven- vene venn veno veor ver- vere vern vero veve vevo vfcc vfor voce voer voff vofr vone vonn vooc voor vor- vore voro vref vreo vrnn vroc vron vver vvvv