6 letter words:
belief11,
foible11,
5 letter words:
biffo13,
folie8,
belie7,
obeli7,
4 letter words:
biff12,
boff12,
fief10,
fife10,
fifi10,
beef9,
feeb9,
feel7,
file7,
filo7,
flee7,
floe7,
foil7,
lief7,
life7,
bile6,
blee6,
boil6,
bole6,
lobe6,
lobi6,
3 letter words:
eff9,
iff9,
off9,
fib8,
fob8,
elf6,
fee6,
fie6,
fil6,
foe6,
bee5,
bel5,
bio5,
boi5,
lib5,
lob5,
obe5,
obi5,
eel3,
lee3,
lei3,
lie3,
oil3,
ole3,
2 letter words:
ef5,
fe5,
if5,
of5,
be4,
bi4,
bo4,
ob4,
ee2,
el2,
io2,
li2,
lo2,
oe2,
oi2,