5 letter words:
boeuf10,
4 letter words:
beef9,
bufo9,
feeb9,
beau6,
3 letter words:
fab8,
fob8,
fub8,
auf6,
fae6,
fee6,
feu6,
foe6,
fou6,
oaf6,
ufo6,
abo5,
bee5,
boa5,
oba5,
obe5,
aue3,
eau3,
2 letter words:
ef5,
fa5,
fe5,
of5,
ab4,
ba4,
be4,
bo4,
ob4,
ae2,
ea2,
ee2,
oe2,
ou2,