5 letter words:
fubar10,
feuar8,
4 letter words:
barf9,
beef9,
feeb9,
fare7,
fear7,
fere7,
frae7,
free7,
reef7,
bare6,
bear6,
beau6,
beer6,
brae6,
bree6,
bura6,
rube6,
urea4,
3 letter words:
fab8,
fub8,
arf6,
far6,
fee6,
fer6,
feu6,
fur6,
ref6,
arb5,
bar5,
bee5,
bra5,
bur5,
reb5,
rub5,
urb5,
are3,
ear3,
eau3,
era3,
ere3,
ree3,
rue3,
2 letter words:
ef5,
fa5,
fe5,
ab4,
ba4,
be4,
ae2,
ar2,
er2,
re2,