7 letter words:
backfit18,
5 letter words:
batik11,
4 letter words:
back12,
kaif11,
tack10,
tick10,
fact9,
ikat8,
fiat7,
bait6,
3 letter words:
kaf10,
kif10,
ick9,
kab9,
fab8,
fib8,
cab7,
kat7,
kit7,
aft6,
fat6,
fit6,
act5,
bat5,
bit5,
cat5,
tab5,
tic5,
ait3,
2 letter words:
ka6,
ki6,
fa5,
if5,
ab4,
ba4,
bi4,
ai2,
at2,
it2,
ta2,
ti2,
