9 letter words:
standfast13,
8 letter words:
fantasts11,
7 letter words:
fantast10,
6 letter words:
stands7,
5 letter words:
fasts8,
nadas6,
sands6,
stand6,
antas5,
stats5,
4 letter words:
daft8,
fads8,
fans7,
fast7,
fats7,
ands5,
dans5,
data5,
nada5,
sand5,
tads5,
anas4,
ansa4,
anta4,
ants4,
sans4,
stat4,
tans4,
tass4,
tats4,
3 letter words:
fad7,
aft6,
fan6,
fas6,
fat6,
ads4,
and4,
dan4,
sad4,
tad4,
aas3,
ana3,
ant3,
ass3,
att3,
sat3,
tan3,
tas3,
tat3,
2 letter words:
fa5,
ad3,
aa2,
an2,
as2,
at2,
na2,
ta2,