5 letter words:
genre6,
gerne6,
green6,
4 letter words:
feen7,
feer7,
fere7,
fern7,
free7,
reef7,
eger5,
gene5,
gere5,
gree5,
gren5,
erne4,
reen4,
3 letter words:
feg7,
erf6,
fee6,
fen6,
fer6,
nef6,
ref6,
eng4,
erg4,
gee4,
gen4,
neg4,
reg4,
een3,
ene3,
ere3,
ern3,
nee3,
ree3,
ren3,
2 letter words:
ef5,
fe5,
ee2,
en2,
er2,
ne2,
re2,