5 letter words:
cyber12,
buyer10,
rebuy10,
cuber9,
4 letter words:
zebu15,
brew9,
bury9,
byre9,
crew9,
ruby9,
cube8,
curb8,
wren7,
bren6,
burn6,
cure6,
curn6,
ecru6,
rube6,
unbe6,
rune4,
3 letter words:
wry9,
wye9,
wyn9,
yew9,
bey8,
buy8,
bye8,
cry8,
web8,
cub7,
new6,
rye6,
wen6,
yen6,
ben5,
bun5,
bur5,
cru5,
cue5,
cur5,
ecu5,
neb5,
nub5,
reb5,
rec5,
rub5,
urb5,
ern3,
rue3,
run3,
urn3,
2 letter words:
by7,
we5,
ye5,
be4,
en2,
er2,
ne2,
nu2,
re2,
un2,