6 letter words:
gurnet7,
urgent7,
5 letter words:
grunt6,
tuner5,
4 letter words:
gent5,
genu5,
grue5,
rung5,
trug5,
tung5,
urge5,
rent4,
rune4,
runt4,
tern4,
true4,
tune4,
turn4,
3 letter words:
eng4,
erg4,
gen4,
get4,
gnu4,
gun4,
gut4,
neg4,
reg4,
rug4,
teg4,
tug4,
ern3,
net3,
nut3,
ret3,
rue3,
run3,
rut3,
ten3,
tun3,
urn3,
ute3,
2 letter words:
en2,
er2,
et2,
ne2,
nu2,
re2,
un2,
ut2,
