9 letter words:
backpacks25,
8 letter words:
backpack24,
packsack22,
5 letter words:
aback13,
backs13,
kakas13,
packs13,
bacca11,
kapas11,
cacas9,
pacas9,
4 letter words:
back12,
kaka12,
pack12,
bask10,
cask10,
kabs10,
kapa10,
sack10,
baps8,
cabs8,
caca8,
caps8,
kaas8,
paca8,
pacs8,
scab8,
abas6,
baas6,
casa6,
3 letter words:
kab9,
ask7,
bap7,
cab7,
cap7,
kas7,
pac7,
ska7,
aba5,
abs5,
asp5,
baa5,
bas5,
pas5,
sab5,
sac5,
sap5,
spa5,
aas3,
2 letter words:
ka6,
ab4,
ba4,
pa4,
aa2,
as2,