6 letter words:
exogen14,
goffer13,
renege7,
5 letter words:
offer11,
forge9,
gofer9,
gonef9,
genre6,
genro6,
goner6,
green6,
4 letter words:
exon11,
oxen11,
frog8,
fere7,
fern7,
fore7,
free7,
froe7,
reef7,
eger5,
ergo5,
gene5,
goer5,
gone5,
gore5,
gree5,
ogee5,
ogre5,
erne4,
3 letter words:
fox13,
gox11,
rex10,
eff9,
off9,
fog7,
fee6,
fen6,
fer6,
foe6,
fon6,
for6,
fro6,
ref6,
ego4,
eng4,
erg4,
gee4,
gen4,
gor4,
neg4,
nog4,
reg4,
eon3,
ere3,
ern3,
nee3,
nor3,
one3,
ore3,
ree3,
roe3,
2 letter words:
ex9,
ox9,
ef5,
fe5,
of5,
go3,
en2,
er2,
ne2,
no2,
oe2,
on2,
or2,
re2,