-ene -one eeee eero eevn en-v enee eneo ener enne eno- enoe enon eone eore er-x eren erer erev erne erno eroe eron eroo erre erro erve even ever evex evoe evon evoo evre exen exer exo- exon exor exrx neen neer neev nene neno neo- neon neoo neox nere nero nerr nerv neve nevo nexe nexo nexx nnnn noer non- none nonn nono nonx noo- noon nooo noor noov nor- nore norn noro norr norv nov- nove novo nren nron o-eo oen- oeno oere one- onee oneo oner onex onne onno onon onor ooer oone oooo oore ore- oren oreo orer orex orne orno oro- oroe oron oror orro orve orvr ovee oven over ovo- ovon ovoo ovre oxen oxer oxo- oxon oxox oxxo reen reev rene renn reno rere rero reve revo rexx roen roer roev rone rono roon roor roox rore roro rove rovo roxo rrrr rver veen veer ven- vene venn veno veor ver- vere vern vero veve vevo vexx voer vone vonn voor vor- vore voro voxx vreo vrnn vron vver vvvv xeer xen- xene xenn xeno xeon xer- xero xexe xnee xorn xoro xove xoxo xxxo xxxv xxxx