6 letter words:
spirts8,
sprits8,
stirps8,
strips8,
5 letter words:
priss7,
risps7,
spirt7,
spits7,
sprit7,
stirp7,
strip7,
trips7,
stirs5,
4 letter words:
pirs6,
piss6,
pits6,
psis6,
psst6,
rips6,
ript6,
risp6,
sips6,
spit6,
tips6,
trip6,
rits4,
sirs4,
sist4,
sits4,
sris4,
stir4,
3 letter words:
pir5,
pis5,
pit5,
psi5,
pst5,
rip5,
sip5,
tip5,
its3,
rit3,
sir3,
sis3,
sit3,
sri3,
tis3,
2 letter words:
pi4,
is2,
it2,
si2,
st2,
ti2,