7 letter words:
straffs13,
6 letter words:
staffs12,
straff12,
5 letter words:
raffs11,
staff11,
farts8,
fasts8,
frass8,
frats8,
rafts8,
stars5,
trass5,
tsars5,
4 letter words:
raff10,
arfs7,
fars7,
fart7,
fast7,
fats7,
fras7,
frat7,
raft7,
saft7,
arts4,
rast4,
rats4,
sars4,
star4,
tars4,
tass4,
tsar4,
3 letter words:
aff9,
aft6,
arf6,
far6,
fas6,
fat6,
fra6,
ars3,
art3,
ass3,
ras3,
rat3,
sar3,
sat3,
tar3,
tas3,
2 letter words:
fa5,
ar2,
as2,
at2,
st2,
ta2,