6 letter words:
brunet8,
bunter8,
burnet8,
gurnet7,
urgent7,
5 letter words:
begun8,
brung8,
brent7,
brunt7,
brute7,
buret7,
burnt7,
rebut7,
tuber7,
grunt6,
tuner5,
4 letter words:
berg7,
bung7,
burg7,
grub7,
bent6,
bren6,
brut6,
bunt6,
burn6,
bute6,
rube6,
tube6,
unbe6,
gent5,
genu5,
grue5,
rung5,
trug5,
tung5,
urge5,
rent4,
rune4,
runt4,
tern4,
true4,
tune4,
turn4,
3 letter words:
beg6,
bug6,
ben5,
bet5,
bun5,
bur5,
but5,
neb5,
nub5,
reb5,
rub5,
tub5,
urb5,
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:
be4,
en2,
er2,
et2,
ne2,
nu2,
re2,
un2,
ut2,