-ene -one -ose cccc cccf cccs ccee ccfc ccff ccnc ccne ccnf ccnr ccns ccoc ccrc ccre ccrf ccrs ccsf ccsn ccss cec- cece ceco cecs ceec cees cef- cefc cefn cen- cene ceno cens ceor ceos cer- cerc cere cerf cern cero cers cesc cese cesr cess cfcf cfcn cfco cfcs cffr cfnr cfns cfor cfos cfre cfrn cfse cnco cnes cnrc cnrr cnss coce coco coen coes cofc cofe coff cofs con- conc cone conf conn cono cons coof coon coos cor- corc core corf corn coro corr cors cosc cose coso coss crcc crce crcr cre- crec cree cren creo cres crfc crfs crne crns croc croe cron croo cror crss cscc csce cscf csco cscr cscs csec csee cser csfc csfr csne csor csos csrc csrs csse cssr eccc ecce ecco ecef eces ecfc ecfr ecfs ecne eco- econ ecos ecrc ecrf ecrr ecsc ecse ecss eecs eeee eees eefe eefn eens eeoc eerc eero eers eese efco efen efeo efes effs efon efor ence enco encs enee eneo ener enes ennc enne enns eno- enoc enoe enon enos enrs ense enso eoes eone eons eore ercc erce erec eren erer eres erfc erfs erne erno erns eroc eroe eron eroo eros errc erre erro errs erse erso esce esco escr escs esee esen eseo eser eses esfs esne eso- esos esse esso fccf fces fcsc fece feen feer fees fefc fefe feff fefo fene fenn fens feof feon ferc fere fern fero ferr fers fese fess ffcc ffee ffff ffrr ffss fnrs foce foco focs foer foes fofo fone fono fons foof foon foos for- fore forn foro forr fors foso foss frcc frcn free fren freo fres frfc frns froe fron fros frsc frso fscc fsec fsfo fssc fssf nccc nccf nccn nccr nccs ncec ncee ncef ncen ncer nces ncfc ncfe ncnc ncoc ncor ncos ncrc ncre ncsc ncse ncsf ncss necc nece neco necr necs neef neen neer nees nefe neff nefs nene neno nens neo- neoc neon neoo neos nerc nere nerf nero nerr ners nesc nese nesn neso nesr ness nfer nfff nfon nfrs nfsr nnes nnnn nnos nnss noce noco nocs noer noes non- none nonn nono nons noo- noon nooo noor noos nor- norc nore norf norn noro norr nors nos- nose noss nrcs nren nrfc nroc nron nrrc nrsc nscc nscs nsec nser nsfc nsfs nsnr nsof nsos nsrc nssc nsse nssf nsso nssr nsss o-eo occc occn oce ocee ocef ocon ocos ocre ocro ocrr ocrs oec- oecc oeec oen- oeno oens oere oers oese ofcr ofen ofer off- offc offe offo offr offs ofno ofor ofre onc- once oncf onco one- onec onee oneo oner ones onne onno onon onor onos onsc onse onso oocr ooer ooes ooff oofs oone oons oooo ooos oore oose orce orco orcs ore- orec oren oreo orer ores orfe orff orfs ornc orne orno orns oro- oroe orof oron oror oros orro orrs orse orso oscc osce osco osec osee osen oser oses osno osnr osoo osor osos osro osse osso rccc rccs rcfc rcnr rcon rcos rcsc rcss recc rece recr recs reef reen rees refe reff refn refr refs rene renn reno rens reof reos rere rero rers rese resn reso ress rfef rffc rnco rncs rocc roce roco rocs roen roer roes rofc rofe roff rofo ronc rone rono rons roof roon roor roos rorc rore roro rosc rose roso ross rrfc rrrr rscc rscn rscs rsee rsfc rsnn rsno rsnr rsos rsre s-os sccc scce sccs scec scee scer scfc scfe scnr scon scoo scor scr- scrc scre scrn scrs scsc scsn scso scsr se-c se-e se-f se-n se-o se-s sec- secc sece secn seco secr secs seec seef seen seer sees seff sene senn seno senr sens seoc seon serc sere serf sern sero serr sers sesc sese seso sess sfcc sfco sfcs sfer sffc sfne sfor sfos sfrc sfro sfss sncc sncf snco snee sner snes snns snoc snoo snor snos snrs soce soco socr socs soec soen soeo soes sofo son- sone sono sons soof soon soor soos sore sorn soro sorr sors sose soso soss srcc srec sreo sres srfc srnn srno sros sscc ssce sscs ssec ssee sses ssfc ssns ssoc ssrc ssrs sssc sssf ssss