6 letter words:
straff12,
frusta9,
5 letter words:
raffs11,
ruffs11,
staff11,
stuff11,
tuffs11,
farts8,
fauts8,
frats8,
fraus8,
frust8,
rafts8,
tufas8,
turfs8,
ratus5,
surat5,
sutra5,
4 letter words:
raff10,
ruff10,
tuff10,
arfs7,
aufs7,
fars7,
fart7,
fast7,
fats7,
faur7,
faut7,
fras7,
frat7,
frau7,
furs7,
fust7,
raft7,
saft7,
surf7,
tufa7,
turf7,
arts4,
rast4,
rats4,
ratu4,
rusa4,
rust4,
ruts4,
saut4,
star4,
sura4,
tars4,
taus4,
tsar4,
ursa4,
utas4,
3 letter words:
aff9,
aft6,
arf6,
auf6,
far6,
fas6,
fat6,
fra6,
fur6,
ars3,
art3,
ras3,
rat3,
rut3,
sar3,
sat3,
sau3,
sur3,
tar3,
tas3,
tau3,
uta3,
uts3,
2 letter words:
fa5,
ar2,
as2,
at2,
st2,
ta2,
ur2,
us2,
ut2,