6 letter words:
grunge8,
5 letter words:
gunge7,
gurge7,
4 letter words:
vugg9,
eruv7,
gung6,
genu5,
gren5,
grue5,
gurn5,
rung5,
urge5,
rune4,
3 letter words:
guv7,
veg7,
vug7,
rev6,
egg5,
eng4,
erg4,
gen4,
gnu4,
gue4,
gun4,
gur4,
neg4,
reg4,
rug4,
ern3,
nur3,
ren3,
rue3,
run3,
ure3,
urn3,
2 letter words:
gu3,
ug3,
en2,
er2,
ne2,
nu2,
re2,
un2,
ur2,