-ene -one -ose cccc cccf cccp cccs ccee ccfc ccff ccnc ccne ccnf ccnp ccnr ccns ccoc ccpe ccpn ccpp ccpr ccps ccrc ccre ccrf ccrp ccrs ccsf ccsn ccsp ccss cec- cece ceco cecp cecs ceec cees cef- cefc cefn cen- cene ceno cens ceop ceor ceos cepc cepe cepo cepp cepr ceps cer- cerc cere cerf cern cero cerp cers cesc cese cesp cesr cess cfcf cfcn cfco cfcs cffr cfnr cfns cfor cfos cfpo cfpr cfps cfre cfrn cfrp cfse cnco cncp cnep cnes cnrc cnrr cnss coce coco cocp coen coep coes cofc cofe coff cofs con- conc cone conf conn cono cons coof coon coop coos cope copo copp copr cops cor- corc core corf corn coro corp corr cors cosc cose coso cosp coss cpce cpcs cpep cper cpff cpns cpos cpps cpre cprs cpsc cpso cpsr crcc crce crcr cre- crec cree cren creo crep cres crfc crfs crne crns croc croe cron croo crop cror crpc crps crsp crss cscc csce cscf csco cscr cscs csec csee csep cser csfc csfr csne csnp csor csos cspc cspe csps csrc csrs csse cssr eccc ecce ecco ecef eces ecfc ecfr ecfs ecne eco- econ ecop ecos ecpp ecrc ecrf ecrr ecsc ecse ecsp ecss eecs eeee eees eefe eefn eens eeoc eeps eerc eero eers eese efco efen efeo efes effs efon efor ence enco encs enee eneo ener enes enfp ennc enne enns eno- enoc enoe enon enos enp- enrs ense enso eoes eone eons eore epcc epec epee epen eper epes epfc epns epoc epon epor epos eppc eppo eppp epps epro eprp eprs epsc epsf epsp epss ercc erce ercp erec eren erer eres erfc erfs erne erno erns eroc eroe eron eroo eros erpe erps errc erre erro errs erse erso esce esco escr escs esee esen eseo eser eses esfp esfs esne eso- esop esos espc espe espn espo espp esps esse esso essp fccf fccp fces fcps fcsc fece feen feer fees fefc fefe feff fefo fene fenn fens feof feon fepc feps ferc fere fern fero ferr fers fese fess ffcc ffee ffff ffps ffrr ffss fnrs fnsp foce foco focs foer foes fofo fone fono fons foof foon foos fopp fops for- fore forn foro forr fors foso foss fp-c fpcc fprf frcc frcn frcp free fren freo frep fres frfc frns froe fron frop fros frps frsc frso fscc fsec fsfo fspc fspf fssc fssf fssp nccc nccf nccn nccp nccr nccs ncec ncee ncef ncen ncep ncer nces ncfc ncfe ncnc ncoc ncor ncos ncpc ncrc ncre ncrp ncsc ncse ncsf ncss necc nece neco necr necs neef neen neep neer nees nefe neff nefs nene neno nens neo- neoc neon neoo neos nepc nepe nepr neps nerc nere nerf nero nerr ners nesc nese nesn neso nesr ness nfer nfff nfon nfps nfrs nfsr nnes nnnn nnos nnpr nnss noce noco nocs noer noes non- none nonn nono nons noo- noon nooo noop noor noos nope nops nor- norc nore norf norn noro norr nors nos- nose noss npcc npes nppc npss nrcs nren nrfc nroc nron nrpc nrpn nrps nrrc nrsc nrsp nscc nscs nsec nsep nser nsfc nsfs nsnr nsof nsos nspc nsps nsrc nssc nsse nssf nsso nssp nssr nsss o-eo occc occn oce ocee ocef ocfp ocon ocos ocpp ocre ocro ocrr ocrs oec- oecc oeec oen- oeno oens oeps oere oers oese ofcr ofen ofer off- offc offe offo offr offs ofno ofor ofre onc- once oncf onco one- onec onee oneo onep oner ones onne onno onon onor onos onsc onse onso oocr ooer ooes ooff oofs oone oons oooo ooos oops oore oose opec open opep oper opes opo- opon opor opos oppo opps orce orco orcs ore- orec oren oreo orer ores orfe orff orfs ornc orne orno orns oro- oroe orof oron oror oros orpc orpe orps orro orrs orse orso oscc osce osco osec osee osen oser oses osno osnr osoo osor osos osro osse osso pccc pcce pccs pcep pcer pcfc pcns pcoe pcos pcpn pcpp pcps pcrc pcre pcrf pcse pcso pece peco pecr pecs peec peen peep peer pees pefc peff pefs pen- penc pene penn peno pens peon peor pepe pepo peps per- perc pere perf pern pero perp perr pers pese peso pess pfce pfcs pfff pffr pfps pnec pnes pnon pnpo pnpp pnro pnsc poce poco pocs poer poes poff ponc pone pono ponp pons poof poon poop poor poos pop- popc pope popo popp pops porc pore porn poro porr pors pose posn poso poss ppcc ppcs ppen pper ppos pppn pppo pppp ppps pprc pprf ppsf ppss prcc prcf prcp prcs pre- prec pree pref pren prep pres prfc prfs prnp pro- proc proe prof pron proo prop pros prps prrs prsc prse prso prss psco psec psfs psnc psnr psoc pson psos pspp pspr psps psrp pssc psse psso rccc rccs rcep rcfc rcnr rcon rcos rcpo rcps rcsc rcss recc rece recp recr recs reef reen reep rees refe reff refn refr refs rene renn reno rens reof reop reos repe repo repp repr reps rere rero rers rese resn reso resp ress rfef rffc rnco rncp rncs rnsp rocc roce roco rocs roen roer roes rofc rofe roff rofo ronc rone rono rons roof roon roop roor roos rope ropo rops rorc rore roro rosc rose roso rosp ross rpcs rpfc rpoe rpof rpon rpos rppn rpps rrfc rrrr rrsp rscc rscn rscs rsee rsfc rsnn rsno rsnr rsos rspo rsps rsre s-os sccc scce sccp sccs scec scee scep scer scfc scfe scnr scon scoo scop scor scpe scpo scps 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 seep seer sees seff sene senn seno senr sens seoc seon seop sepe sepn sepo sepp sepr seps serc sere serf sern sero serp serr