5 letter words:
powin10,
orpin7,
poori7,
porno7,
prion7,
proin7,
4 letter words:
pown9,
prow9,
wino7,
woon7,
worn7,
noop6,
pion6,
pirn6,
poon6,
poor6,
porn6,
proo6,
roop6,
inro4,
iron4,
noir4,
nori4,
roin4,
roon4,
3 letter words:
pow8,
wop8,
iwi6,
now6,
own6,
row6,
win6,
won6,
woo6,
nip5,
oop5,
pin5,
pir5,
poi5,
poo5,
pro5,
rip5,
ion3,
noo3,
nor3,
ono3,
oon3,
oor3,
rin3,
roo3,
2 letter words:
ow5,
wo5,
op4,
pi4,
po4,
in2,
io2,
no2,
oi2,
on2,
oo2,
or2,