5 letter words:
exist12,
exits12,
sixte12,
4 letter words:
exit11,
sext11,
site4,
stie4,
ties4,
3 letter words:
sex10,
six10,
tex10,
tix10,
xis10,
est3,
its3,
sei3,
set3,
sit3,
tes3,
tie3,
tis3,
2 letter words:
ex9,
xi9,
es2,
et2,
is2,
it2,
si2,
st2,
te2,
ti2,