6 letter words:
unfurl9,
5 letter words:
flung9,
4 letter words:
frug8,
fugu8,
fund8,
gulf8,
furl7,
drug6,
dung6,
durn5,
guru5,
lung5,
nurd5,
rung5,
nurl4,
3 letter words:
fud7,
fug7,
flu6,
fun6,
fur6,
dug5,
dun4,
gnu4,
gul4,
gun4,
lug4,
rug4,
urd4,
run3,
ulu3,
urn3,
2 letter words:
nu2,
un2,