5 letter words:
aback13,
backs13,
abask11,
abacs9,
cabas9,
4 letter words:
back12,
bask10,
cask10,
kabs10,
sack10,
abac8,
bacs8,
caba8,
cabs8,
kaas8,
scab8,
abas6,
baas6,
caas6,
casa6,
3 letter words:
kab9,
aka7,
ask7,
bac7,
cab7,
kas7,
ska7,
aba5,
abs5,
baa5,
bas5,
caa5,
sab5,
sac5,
aas3,
2 letter words:
ka6,
ab4,
ba4,
aa2,
as2,