-ene -one cccc cccv ccee ccnc ccne ccnr ccoc ccrc ccre ccvo cec- cece ceco ceec cen- cene ceno ceor cer- cerc cere cern cero cevo cnco cnrc cnrr coce coco coen con- conc cone conn cono conv coon cor- corc core corn coro corr cove covo crcc crce crcr cre- crec cree cren creo crne croc croe cron croo cror cvcc cven cver cvrr eccc ecce ecco ecne eco- econ ecrc ecrr ecrv eeee eeoc eerc eero eevn en-v ence enco enee eneo ener ennc enne eno- enoc enoe enon eone eore ercc erce erec eren erer erev erne erno eroc eroe eron eroo errc erre erro erve even ever evoe evon evoo evre nccc nccn nccr ncec ncee ncen ncer ncnc ncoc ncor ncrc ncre necc nece neco necr neen neer neev nene neno neo- neoc neon neoo nerc nere nero nerr nerv neve nevo nnnn noce noco noer non- none nonn nono noo- noon nooo noor noov nor- norc nore norn noro norr norv nov- nove novo nren nroc nron nrrc nvcc o-eo occc occn oce ocee ocon ocre ocro ocrr oec- oecc oeec oen- oeno oere onc- once onco one- onec onee oneo oner onne onno onon onor oocr ooer oone oooo oore orce orco ore- orec oren oreo orer ornc orne orno oro- oroe oron oror orro orve orvr ovee oven over ovo- ovon ovoo ovre rccc rcnr rcon rcvr recc rece recr reen reev rene renn reno rere rero reve revo rnco rocc roce roco roen roer roev ronc rone rono roon roor rorc rore roro rove rovo rrrr rv-c rver vcon vecc veen veer ven- vene venn veno veor ver- vere vern vero veve vevo voce voer vone vonn vooc voor vor- vore voro vreo vrnn vroc vron vver vvvv