5 letter words:
forge9,
gofer9,
4 letter words:
frog8,
fore7,
froe7,
orfe7,
ergo5,
goer5,
gore5,
ogre5,
rego5,
3 letter words:
feg7,
fog7,
erf6,
fer6,
foe6,
for6,
fro6,
orf6,
ref6,
ego4,
erg4,
geo4,
goe4,
gor4,
reg4,
ore3,
reo3,
roe3,
2 letter words:
ef5,
fe5,
of5,
go3,
er2,
oe2,
or2,
re2,
