5 letter words:
porno7,
4 letter words:
pown9,
prow9,
woon7,
worn7,
noop6,
noup6,
poon6,
poor6,
porn6,
pour6,
proo6,
roop6,
roup6,
upon6,
ourn4,
roon4,
3 letter words:
pow8,
wop8,
now6,
own6,
row6,
won6,
woo6,
oop5,
oup5,
poo5,
pro5,
pun5,
pur5,
upo5,
urp5,
noo3,
nor3,
nur3,
ono3,
oon3,
oor3,
our3,
roo3,
run3,
urn3,
2 letter words:
ow5,
wo5,
op4,
po4,
up4,
no2,
nu2,
on2,
oo2,
or2,
ou2,
un2,
ur2,