8 letter words:
fastback19,
fatbacks19,
7 letter words:
fatback18,
5 letter words:
aback13,
backs13,
stack11,
tacks11,
abaft10,
facts10,
katas9,
takas9,
4 letter words:
back12,
kafs11,
bask10,
cask10,
kabs10,
sack10,
tack10,
fabs9,
fact9,
cabs8,
kaas8,
kata8,
kats8,
scab8,
skat8,
taka8,
task8,
fast7,
fats7,
abas6,
acta6,
acts6,
baas6,
bast6,
bats6,
casa6,
cast6,
cats6,
scat6,
stab6,
tabs6,
3 letter words:
kaf10,
kab9,
fab8,
ask7,
cab7,
kas7,
kat7,
ska7,
tsk7,
aft6,
fas6,
fat6,
aba5,
abs5,
act5,
baa5,
bas5,
bat5,
cat5,
sab5,
sac5,
tab5,
aas3,
sat3,
tas3,
2 letter words:
ka6,
fa5,
ab4,
ba4,
aa2,
as2,
at2,
ta2,