5 letter words:
pious7,
pours7,
puris7,
roups7,
sirup7,
4 letter words:
opus6,
oups6,
pirs6,
piso6,
pois6,
pour6,
pros6,
puir6,
puri6,
purs6,
rips6,
risp6,
roup6,
soup6,
spur6,
urps6,
ours4,
sori4,
sour4,
3 letter words:
ops5,
oup5,
pir5,
pis5,
piu5,
poi5,
pos5,
pro5,
psi5,
pur5,
pus5,
rip5,
sip5,
sop5,
sup5,
upo5,
ups5,
urp5,
ios3,
iso3,
ors3,
our3,
ous3,
sir3,
sou3,
sri3,
sui3,
sur3,
2 letter words:
op4,
pi4,
po4,
up4,
io2,
is2,
oi2,
or2,
os2,
ou2,
si2,
so2,
ur2,
us2,