5 letter words:
pronk11,
kroon9,
porno7,
4 letter words:
knop10,
ponk10,
pook10,
pork10,
koro8,
nook8,
nork8,
rook8,
noop6,
poon6,
poor6,
porn6,
proo6,
roop6,
roon4,
3 letter words:
kop9,
kon7,
kor7,
rok7,
oop5,
poo5,
pro5,
noo3,
nor3,
ono3,
oon3,
oor3,
roo3,
2 letter words:
ko6,
op4,
po4,
no2,
on2,
oo2,
or2,