-ene -one cccc ccee cche cchr ccnc ccne ccnr ccoc ccrc ccre cec- cece ceco ceec cen- cene ceno ceor cer- cerc cere cern cero cexe chce chch chec chee cheh chen cher chex chnc chno chnr choc choh chon choo chor chrc chrn chro chrr cnco cnex cnoh cnrc cnrr coce coch coco coen coex cohn coho con- conc cone conn cono cooh coon cor- corc core corn coro corr coxe crcc crce crcr cre- crec cree creh cren creo crex crne croc croe croh cron croo cror cxro cxxx eccc ecce ecco eche echo ecne eco- econ ecrc ecrr eeee eeoc eerc eero ehcc eheh ehen eher ehre ence ench enco enee eneo ener ennc enne eno- enoc enoe enon eone eore er-x ercc erce erch erec eren erer erhc erne erno eroc eroe eron eroo errc erre erro exch exco exec exen exer exh- exo- exon exor exrx hccc hcch hech heer hehe hehn heho hene henh henn heno heor herc here hern hero herr hex- hexe hhex hhhh hnce hoce hoch hocn hocr hoen hoer hohe hohn hoho hone hono hooe hoon hoor hoox horc hore horn horo horr hree hron hrrc nccc nccn nccr ncec ncee ncen ncer nchc ncnc ncoc ncor ncrc ncre necc nece nech neco necr neen neer nehe nene nenh neno neo- neoc neon neoo neox nerc nere nero nerr nexe nexo nexx nhcc nhnn nhon nhrc nnnn noce noch noco noer nohn noho non- none nonn nono nonx noo- noon nooo noor nor- norc nore norn noro norr nren nroc nron nrrc o-eo occc occn oce ocee oche ocon ocre ocro ocrr oec- oecc oeec oen- oeno oere ohcc ohee ohen oher ohho ohne ohno ohoh ohre ohrn onc- once onco one- onec onee oneh oneo oner onex onne onno onon onor oocr ooer ooho oone oooh oooo oore orce orch orco ore- orec oreh oren oreo orer orex orhe ornc orne orno oro- oroe oron oror orro oxen oxer oxo- oxon oxox oxxo rccc rcnr rcon recc rece rech recr reen rehe rehn rene renn reno rere rero rexx rhce rhee rhen rheo rhex rhoc rhoh rhon rnco rocc roce roch roco roen roer rohe rohn rohr ronc rone rono roon roor roox rorc rore roro roxo rrrr xcon xeer xen- xene xenn xeno xeon xer- xero xexe xnee xoco xorn xoro xoxo xxxo xxxx