6 letter words:
fastie9,
fiesta9,
5 letter words:
fasti8,
fates8,
feast8,
feats8,
feist8,
festa8,
fetas8,
fiats8,
fiest8,
4 letter words:
efts7,
fast7,
fate7,
fats7,
feat7,
feis7,
fest7,
feta7,
fets7,
fiat7,
fist7,
fits7,
safe7,
saft7,
seif7,
sift7,
tefs7,
aits4,
ates4,
east4,
eats4,
etas4,
itas4,
sate4,
sati4,
seat4,
seta4,
site4,
stie4,
taes4,
tais4,
teas4,
ties4,
3 letter words:
aft6,
efs6,
eft6,
fae6,
fas6,
fat6,
fes6,
fet6,
fie6,
fit6,
ifs6,
sif6,
tef6,
ais3,
ait3,
ate3,
eas3,
eat3,
est3,
eta3,
ita3,
its3,
sae3,
sai3,
sat3,
sea3,
sei3,
set3,
sit3,
tae3,
tai3,
tas3,
tea3,
tes3,
tie3,
tis3,
2 letter words:
ef5,
fa5,
fe5,
if5,
ae2,
ai2,
as2,
at2,
ea2,
es2,
et2,
is2,
it2,
si2,
st2,
ta2,
te2,
ti2,