5 letter words:
befit10,
boite7,
4 letter words:
bite6,
obit6,
3 letter words:
fib8,
fob8,
eft6,
fet6,
fie6,
fit6,
foe6,
oft6,
bet5,
bio5,
bit5,
bot5,
obe5,
obi5,
tie3,
toe3,
2 letter words:
ef5,
fe5,
if5,
of5,
be4,
bi4,
bo4,
et2,
it2,
oe2,
oi2,
ti2,
to2,