-ene -one cccc cccf cccu ccee ccfc ccff ccnc ccne ccnf ccnr ccnu ccoc ccrc ccre ccrf ccuc cec- cece ceco ceec cef- cefc cefn cen- cene ceno ceor ceou cer- cerc cere cerf cern cero cfcf cfcn cfco cffr cfnr cfor cfre cfrn cfun cnco cnrc cnrr coce coco cocu coen cofc cofe coff con- conc cone conf conn cono coof coon cor- corc core corf corn coro corr coue coun cour crcc crce crcr cre- crec cree cren creo creu crfc crne croc croe cron croo cror crue crun cucc cuce cucn cuer cufc cuff cufo cune cuno cuon cure curf curn curo curr eccc ecce ecco ecef ecfc ecfr ecne eco- econ ecou ecrc ecrf ecrr ecru eeee eefe eefn eeoc eerc eero efco efen efeo efon efor ence enco enee eneo ener ennc enne ennu eno- enoc enoe enon enue enuf enur eone eore ercc erce erec eren erer erfc erne erno eroc eroe eron eroo errc erre erro eruc erur euer eufc eur- eurc eure euro fccf fece feen feer fefc fefe feff fefo fene fenn feof feon ferc fere fern fero ferr feru ffcc ffee ffff ffrr ffun fnuf foce foco foer fofo fone fono foof foon for- fore forn foro forr foun four frcc frcn free fren freo frfc froe fron frou frue frun fuc- fufc fuff fufu fune funf fuor fur- fure furn furo furr nccc nccf nccn nccr nccu ncec ncee ncef ncen ncer ncfc ncfe ncnc ncoc ncor ncrc ncre ncue necc nece neco necr neef neen neer nefe neff nene neno nenu neo- neoc neon neoo nerc nere nerf nero nerr neru neuc neue neuf neun neuo neur neuu nfcu nfer nfff nfon nnnn noce noco noer non- none nonn nono nonu noo- noon nooo noor nor- norc nore norf norn noro norr noun nour nren nrfc nroc nron nrrc nuce nucu nuee nuer nuff nunc nune nunn nuno nuoc nuon nurc nure nurn nurr nuru o-eo occc occn oce ocee ocef ocon ocre ocro ocrr ocur oec- oecc oeec oen- oeno oere oeuf ofcr ofen ofer off- offc offe offo offr offu ofno ofor ofre onc- once oncf onco one- onec onee oneo oner onne onno onon onor onue onur oocr ooer ooff oone oooo oore orce orco ore- orec oren oreo orer orfe orff orfu ornc orne orno oro- oroe orof oron oror orro oucc ouen ouer oufc oufe ouff oun- oune our- oure ourn ouro ouu- rccc rcfc rcnr rcon recc rece recr recu reef reen refe reff refn refr refu rene renn reno renu reof reou rere rero reru reue reuf reuu rfef rffc rnco rocc roce roco roen roer rofc rofe roff rofo ronc rone rono roof roon roor rorc rore roro roru roue rouf roun rrfc rrrr rrun ruce ruen ruer rufc rufe ruff rufo runc rune runf runn runo rurc rure ruro ruru ruun ucon ucrc ueno ufcu ufer uffe uncc unce uncf unco unec unee unef unen uner unne unno unon unrf unro uocc uofo uone uor- uore ure- urfe urff urne uro- uroo urre urun urur uuen uuno uuoc uuuu