6 letter words:
foists9,
5 letter words:
fists8,
foist8,
sifts8,
softs8,
tofus8,
ousts5,
situs5,
suits5,
4 letter words:
fist7,
fits7,
foss7,
fuss7,
sift7,
soft7,
tofu7,
oust4,
outs4,
sits4,
sots4,
sous4,
suit4,
toss4,
tuis4,
3 letter words:
fit6,
fou6,
ifs6,
oft6,
its3,
out3,
sis3,
sit3,
sos3,
sot3,
sou3,
tis3,
tui3,
uts3,
2 letter words:
if5,
of5,
is2,
it2,
oi2,
os2,
si2,
so2,
ti2,
to2,
us2,
ut2,