7 letter words:
pissoir9,
soursop9,
6 letter words:
pooris8,
porous8,
priors8,
prosos8,
sirups8,
sopors8,
spoors8,
5 letter words:
pious7,
pisos7,
poori7,
pours7,
prior7,
priss7,
proso7,
pross7,
puris7,
purrs7,
roups7,
sirup7,
sopor7,
soups7,
spoor7,
spurs7,
orris5,
risus5,
sorus5,
sours5,
4 letter words:
oops6,
opus6,
piso6,
piss6,
pois6,
poor6,
poos6,
pour6,
pros6,
psis6,
puri6,
purr6,
purs6,
puss6,
rips6,
roup6,
sips6,
sops6,
soup6,
spur6,
sups6,
urps6,
iris4,
ours4,
sirs4,
sori4,
sour4,
sous4,
sris4,
3 letter words:
ops5,
pis5,
piu5,
poi5,
poo5,
pro5,
psi5,
pur5,
pus5,
rip5,
sip5,
sop5,
sup5,
upo5,
ups5,
urp5,
ors3,
our3,
sir3,
sis3,
sos3,
sou3,
sri3,
2 letter words:
op4,
pi4,
up4,
is2,
oi2,
or2,
os2,
si2,
so2,
us2,