7 letter words:
pissoir9,
6 letter words:
spoils8,
5 letter words:
lisps7,
pilis7,
pisos7,
polis7,
priss7,
pross7,
slips7,
slops7,
spoil7,
loris5,
roils5,
silos5,
soils5,
4 letter words:
lips6,
lisp6,
lops6,
pili6,
piso6,
piss6,
pois6,
pols6,
pros6,
psis6,
rips6,
sips6,
slip6,
slop6,
sops6,
iris4,
liri4,
loss4,
oils4,
roil4,
silo4,
sirs4,
soil4,
soli4,
sols4,
sori4,
sris4,
3 letter words:
lip5,
lop5,
ops5,
pis5,
poi5,
pol5,
pro5,
psi5,
rip5,
sip5,
sop5,
lis3,
oil3,
ors3,
sir3,
sis3,
sol3,
sos3,
sri3,
2 letter words:
op4,
pi4,
is2,
li2,
lo2,
oi2,
or2,
os2,
si2,
so2,