5 letter words:
mists7,
mitts7,
smits7,
stims7,
4 letter words:
isms6,
miss6,
mist6,
mitt6,
sims6,
smit6,
stim6,
sist4,
sits4,
tits4,
3 letter words:
mim7,
ism5,
mis5,
sim5,
its3,
sis3,
sit3,
tis3,
tit3,
2 letter words:
mm6,
mi4,
is2,
it2,
si2,
st2,
ti2,