8 letter words:
oophoron13,
6 letter words:
hoopoo11,
hooroo9,
5 letter words:
phono10,
honor8,
porno7,
4 letter words:
hoop9,
phon9,
pooh9,
hoon7,
horn7,
noop6,
poon6,
poor6,
porn6,
proo6,
roop6,
roon4,
3 letter words:
hop8,
pho8,
poh8,
hon6,
hoo6,
noh6,
oho6,
ooh6,
rho6,
oop5,
poo5,
pro5,
noo3,
nor3,
ono3,
oon3,
oor3,
roo3,
2 letter words:
ho5,
oh5,
op4,
po4,
no2,
on2,
oo2,
or2,