-ene -one cccc cccf ccee ccfc ccff ccnc ccne ccnf ccnr ccoc ccrc ccre ccrf cec- cece ceco ceec cef- cefc cefn cen- cene ceno ceor cer- cerc cere cerf cern cero ceze cfcf cfcn cfco cffr cfnr cfor cfre cfrn cnco cnnz cnrc cnrr coce coco coen cofc cofe coff con- conc cone conf conn cono coof coon cor- corc core corf corn coro corr coze cozz crcc crce crcr crcz cre- crec cree cren creo crfc crne croc croe cron croo cror croz czon eccc ecce ecco ecef ecfc ecfr ecne eco- econ ecrc ecrf ecrr eeee eefe eefn eeoc eerc eero eeze efco efen efeo efon efor efze ence enco enee eneo ener enez ennc enne eno- enoc enoe enon enzo eone eore ercc erce erec eren erer erez erfc erne erno eroc eroe eron eroo errc erre erro ezer ezzo fccf fece feen feer fefc fefe feff fefo fene fenn feof feon ferc fere fern fero ferr ferz ffcc ffee ffff ffrr foce foco foer fofo fone fono fonz foof foon for- fore forn foro forr 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 nefe neff nene neno neo- neoc neon neoo nerc nere nerf nero nerr nerz nfer nfff nfon nnnn noce noco noer noez non- none nonn nono noo- noon nooo noor nor- norc nore norf norn noro norr nren nrfc nroc nron nrrc nzcc nzcf 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 ofoz ofre onc- once oncf onco one- onec onee oneo oner onez onne onno onon onor onoz onze onzo oocr ooer ooff oone oooo oore ooze orce orco ore- orec oren oreo orer orfe orff ornc orne orno oro- oroe orof oron oror oroz orro orzo ozee ozen ozer ozon rccc rcfc rcnr rcon recc rece recr recz reef reen refe reff refn refr rene renn reno renz reof rere rero reze rfef rffc rnco rocc roce roco roen roer rofc rofe roff rofo ronc rone rono roof roon roor rooz rorc rore roro roze rozz rrfc rrrr z-ro zeff zenn zeno zeon zerf zero zeze znen zoco zoff zon- zone zoo- zoon zorc zore zorn zoro zozo zrce zrze zzzz