9 letter words:
knapsacks21,
8 letter words:
knapsack20,
6 letter words:
knacks16,
skanks14,
snacks12,
spanks12,
5 letter words:
knack15,
kakas13,
packs13,
skank13,
casks11,
kapas11,
knaps11,
sacks11,
snack11,
spank11,
kanas9,
pacas9,
casas7,
napas7,
scans7,
snaps7,
spans7,
4 letter words:
kaka12,
pack12,
cask10,
kapa10,
knap10,
sack10,
asks8,
caps8,
kaas8,
kana8,
paca8,
pacs8,
sank8,
skas8,
asps6,
cans6,
casa6,
napa6,
naps6,
pans6,
pass6,
sacs6,
saps6,
scan6,
snap6,
span6,
spas6,
anas4,
ansa4,
sans4,
3 letter words:
ask7,
cap7,
kas7,
pac7,
ska7,
asp5,
can5,
nap5,
pan5,
pas5,
sac5,
sap5,
spa5,
aas3,
ana3,
ass3,
2 letter words:
ka6,
pa4,
aa2,
an2,
as2,
na2,