5 letter words:
abaft10,
abbot9,
baboo9,
afoot8,
tafia8,
biota7,
taboo7,
4 letter words:
abba8,
baba8,
boob8,
fiat7,
foot7,
bait6,
boat6,
boot6,
bota6,
obia6,
obit6,
iota4,
3 letter words:
fab8,
fib8,
fob8,
bib7,
bob7,
aft6,
fat6,
fit6,
oaf6,
oft6,
aba5,
abo5,
baa5,
bat5,
bio5,
bit5,
boa5,
boo5,
bot5,
oba5,
obi5,
tab5,
ait3,
oat3,
oot3,
tao3,
too3,
2 letter words:
fa5,
if5,
of5,
ab4,
ba4,
bi4,
bo4,
aa2,
ai2,
at2,
it2,
oi2,
ta2,
ti2,
to2,