4 letter words:
buhr9,
herb9,
hern7,
bren6,
burn6,
rube6,
unbe6,
rune4,
3 letter words:
hub8,
hen6,
her6,
hue6,
hun6,
ben5,
bun5,
bur5,
neb5,
nub5,
reb5,
rub5,
urb5,
ern3,
rue3,
run3,
urn3,
2 letter words:
eh5,
he5,
uh5,
be4,
en2,
er2,
ne2,
nu2,
re2,
un2,