7 letter words:
greener8,
regreen8,
reneger8,
6 letter words:
gunner7,
renege7,
runner6,
5 letter words:
genre6,
green6,
urger6,
enure5,
rerun5,
4 letter words:
eger5,
gene5,
genu5,
gree5,
grue5,
rung5,
urge5,
erne4,
nene4,
ruer4,
rune4,
3 letter words:
eng4,
erg4,
gee4,
gen4,
gnu4,
gun4,
neg4,
reg4,
rug4,
ere3,
ern3,
err3,
nee3,
nun3,
ree3,
rue3,
run3,
urn3,
2 letter words:
en2,
er2,
ne2,
nu2,
re2,
un2,