5 letter words:
timps9,
4 letter words:
spif9,
imps8,
mips8,
simp8,
spim8,
fist7,
fits7,
sift7,
mist6,
pits6,
smit6,
spit6,
stim6,
tips6,
3 letter words:
imp7,
fit6,
ifs6,
sif6,
ism5,
mis5,
pis5,
pit5,
psi5,
pst5,
sim5,
sip5,
tip5,
its3,
sit3,
tis3,
2 letter words:
if5,
mi4,
pi4,
is2,
it2,
si2,
st2,
ti2,