-ene -one -yne cccc cccf ccee ccfc ccff ccnc ccne ccnf ccnr ccny ccoc ccrc ccre ccrf cec- cece ceco ceec cef- cefc cefn cen- cene ceno ceny ceor cer- cerc cere cerf cern cero cery cfcf cfcn cfco cfcy cffr cfnr cfor cfre cfrn cfry cfyn cnco cnrc cnrr coce coco coen cofc cofe coff con- conc cone conf conn cono cony coof coon cor- corc core corf corn coro corr cory coyf coyn coyo coyr crcc crce crcr cre- crec cree cren creo crfc crne croc croe cron croo cror croy cry- cryn cryo cyc- cycc cyen cyfe cyn- cyne cyno cyon cyre cyy- cyyc cyyn eccc ecce ecco ecef ecfc ecfr ecne eco- econ ecrc ecrf ecrr eeee eefe eefn eeny eeoc eerc eero eery efco efen efeo effy efon efor ence enco ency enee eneo ener eney ennc enne enny eno- enoc enoe enon enoy enry enye enyo eone eore ercc erce erec eren erer erfc erne erno eroc eroe eron eroo errc erre erro eryc erye eyec eyen eyer eyey eyne eyre eyry eyyr fccf fece feen feer fefc fefe feff fefo fene fenn feny feof feon ferc fere fern fero ferr fery feyn feyr ffcc ffee ffff ffrr foce foco foer fofo fone fono fony foof foon for- fore forn foro forr foyn frcc frcn free fren freo frey frfc froe fron frye fyce fyen fyeo fyfe fyne fynn fyre fyry nccc nccf nccn nccr ncec ncee ncef ncen ncer ncfc ncfe ncnc ncoc ncor ncrc ncre necc nece neco necr necy neef neen neer nefe neff nene neno neo- neoc neon neoo nerc nere nerf nero nerr nery neye neyf neyn neyo nfer nfff nfon nfyc nnnn noce noco noer non- none nonn nono noo- noon nooo noor nor- norc nore norf norn noro norr nory noye noyo nren nrfc nroc nron nrrc nycc nyce nyco nycy nyen nyer nyne nyny nyon nyrf nyro o-eo occc occn oce ocee ocef ocon ocre ocro ocrr oec- oecc oeec oen- oeno oere oeye oeyo ofcr ofen ofer off- offc offe offo offr offy ofno ofor ofre onc- once oncf onco one- onec onee oneo oner oney onne onno onon onor onoy oocr ooer ooff oofy oone oooo oore oory orce orco ore- orec oren oreo orer orey orfe orff ornc orne orno orny oro- oroe orof oron oror oroy orro orry oyce oyee oyen oyer oyne oyon oyre rccc rcfc rcnr rcon rcyc recc rece recr recy reef reen refe reff refn refr rene renn reno reny reof rere rero rery reye reyn rfef rffc rnco rocc roce roco roen roer roey rofc rofe roff rofo ronc rone rono rony roof roon roor rorc rore roro rory roye royn rrfc rrrr ryen ryfe ryff ryne rynn ryon ryyf yccc ycee yeen yeer yefe yeff yenc yene yeof yeon yere yern yero yerr yery yeye yeyo yeyr ynce ynne ynon yoen yoff yone yono yoof yoon yore yorn yoro yory yoye yoyn yoyo yren yrne yrof yron yryn yyfe yyff yyyy