5 letter words:
fasts8,
pasts7,
spats7,
stats5,
4 letter words:
fast7,
fats7,
asps6,
pass6,
past6,
pats6,
psst6,
saps6,
spas6,
spat6,
taps6,
stat4,
tass4,
tats4,
3 letter words:
aft6,
fas6,
fat6,
apt5,
asp5,
pas5,
pat5,
pst5,
sap5,
spa5,
tap5,
ass3,
att3,
sat3,
tas3,
tat3,
2 letter words:
fa5,
pa4,
as2,
at2,
ta2,