7 letter words:
grunger9,
6 letter words:
grugru8,
grunge8,
rugger8,
5 letter words:
wrung9,
gurge7,
urger6,
rerun5,
4 letter words:
grew8,
wren7,
genu5,
grue5,
guru5,
rung5,
urge5,
ruer4,
rune4,
3 letter words:
new6,
wen6,
egg5,
eng4,
erg4,
gen4,
gnu4,
gun4,
neg4,
reg4,
rug4,
ern3,
err3,
rue3,
run3,
urn3,
2 letter words:
we5,
en2,
er2,
ne2,
nu2,
re2,
un2,