5 letter words:
grunt6,
4 letter words:
frug8,
fugu8,
fund8,
turf7,
drug6,
dung6,
dunt5,
durn5,
durr5,
guru5,
nurd5,
rung5,
trug5,
tung5,
turd5,
runt4,
turn4,
3 letter words:
fud7,
fug7,
fun6,
fur6,
dug5,
dun4,
gnu4,
gun4,
gut4,
rug4,
tug4,
urd4,
nut3,
run3,
rut3,
tun3,
urn3,
2 letter words:
nu2,
un2,
ut2,