6 letter words:
napron8,
nonpar8,
5 letter words:
apron7,
napoo7,
porno7,
4 letter words:
noop6,
poon6,
poor6,
porn6,
prao6,
proa6,
proo6,
roop6,
anno4,
anon4,
nona4,
noon4,
roan4,
roon4,
3 letter words:
apo5,
nap5,
oop5,
pan5,
par5,
poa5,
poo5,
pro5,
rap5,
ann3,
nan3,
non3,
noo3,
nor3,
oar3,
ono3,
oon3,
oor3,
ora3,
ran3,
roo3,
2 letter words:
op4,
pa4,
po4,
an2,
ar2,
na2,
no2,
on2,
oo2,
or2,