5 letter words:
aback13,
babka13,
kabab13,
4 letter words:
back12,
tack10,
abac8,
abba8,
baba8,
caba8,
kata8,
taka8,
acta6,
3 letter words:
kab9,
abb7,
aka7,
bac7,
cab7,
kat7,
tak7,
aba5,
act5,
baa5,
bat5,
caa5,
cat5,
tab5,
2 letter words:
ka6,
ab4,
ba4,
aa2,
at2,
ta2,