-ene -one cccc cccf ccee ccfc ccff ccnc ccne ccnf ccnr ccoc ccrc ccre ccrf ccrt cctc cctt cec- cece ceco cect ceec cef- cefc cefn cen- cene ceno cent ceor cer- cerc cere cerf cern cero cert cet- cete ceto cfcf cfcn cfco cffr cfnr cfor cfre cfrn cfrt cftc cfte cftr cnco cnet cnrc cnrr cnrt cntc cntf cntr coce coco coct coen cofc cofe coff coft con- conc cone conf conn cono cont coof coon coot cor- corc core corf corn coro corr cort cotc cote cotn coto cott crcc crce crcr cre- crec cree cren creo cret crfc crne croc croe cron croo cror crot crrt crtc crtf ctcf ctec cten ctfc ctfo ctne ctor ctot ctrc ctrn cttn eccc ecce ecco ecct ecef ecfc ecfr ecne eco- econ ecot ecrc ecrf ecrr ect- ectc ectf ecto eeee eefe eefn eent eeoc eerc eero eetc eete efco efen efeo efet efon efor eft- ence enco enee eneo ener ennc enne eno- enoc enoe enon ent- ente ento entr eone eont eore eotc eoto ercc erce erec eren erer eret erfc erft erne erno eroc eroe eron eroo errc erre erro etcc etco etec etee eten eter etfc etfe etne etnr etoe eton etre etro ette ettn etto fccf fcot fcto fece fect feen feer feet fefc fefe feff fefo fene fenn fent feof feon ferc fere fern fero ferr fert fete fetr fett ffcc ffee ffff ffrr fftf fnet foce foco foer fofo fone fono font foof foon foot for- fore forn foro forr fort fote foto fott frcc frcn free fren freo fret frfc froe fron frot ft-c ften fter ftfc nccc nccf nccn nccr ncct ncec ncee ncef ncen ncer ncfc ncfe ncnc ncoc ncor ncrc ncre nctc ncte nctr necc nece neco necr nect neef neen neer neet nefe neff nene neno nent neo- neoc neon neoo neot nerc nere nerf nero nerr nert net- nete neto nett nfct nfer nfff nfon nftc nfto nnnn nnot nntn noce noco noct noer non- none nonn nono nont noo- noon nooo noor noot nor- norc nore norf norn noro norr nort not- note noto nott nren nrfc nroc nron nrrc ntcc nter ntfc ntof ntrc ntto nttr o-eo occc occn occt oce ocee ocef ocet ocon ocre ocro ocrr oct- octe octo oec- oecc oeec oen- oeno oere ofcr ofen ofer off- offc offe offo offr ofno ofor ofre onc- once oncf onco onct one- onec onee oneo oner onne onno onon onor ont- ontc onto oocr ooer ooff oone oont oooo oore oort orce orco ore- orec oren oreo orer orfe orff ornc orne orno oro- oroe orof oron oror orot orro ortc orte orto otee oten oter otfc oto- otoe otof oton otoo otor otre otro otte otto rccc rcet rcfc rcnr rcon rctc recc rece recr rect reef reen reet refe reff refn refr reft rene renn reno rent reof reot rere rero rert rete reto retr rett rfef rffc rftc rnco rnnt rnot rocc roce roco roen roer roet rofc rofe roff rofo ronc rone rono ront roof roon roor root rorc rore roro rort rotc rote rotn roto rotr rott rrfc rrrr rtcc rtce rtee rtfc tccc tcfc tcnn tcon tctc teco tecr tect teec teef teen teer teet tefc teff teft tenc tene tenn teno tent teon teor ter- terc tere terf tern tero terr tete teto tetr tett tfec tfot tftc tncc tnef tnfc toce toco toee toen toer toet toff tofo toft tone tonn tono toof toon toor toot torc tore torf torn toro torr tort totc tote toto totr tott trcc tre- trec tree tref tren treo tret trfc trfr trno troc troe tron troo trot trtc trte trtr ttcn tten tteo tter ttfc ttff ttfn ttoe tton tttt