7 letter words:
harpoon12,
6 letter words:
orphan11,
5 letter words:
phono10,
honor8,
apron7,
napoo7,
porno7,
4 letter words:
harp9,
hoop9,
opah9,
phon9,
pooh9,
harn7,
haro7,
hoar7,
hoon7,
hora7,
horn7,
noah7,
noop6,
poon6,
poor6,
porn6,
prao6,
proa6,
proo6,
roop6,
roan4,
roon4,
3 letter words:
hap8,
hop8,
pah8,
pho8,
poh8,
han6,
hao6,
hoa6,
hon6,
hoo6,
nah6,
noh6,
oho6,
ooh6,
rah6,
rho6,
apo5,
nap5,
oop5,
pan5,
par5,
poa5,
poo5,
pro5,
rap5,
noo3,
nor3,
oar3,
ono3,
oon3,
oor3,
ora3,
ran3,
roo3,
2 letter words:
ah5,
ha5,
ho5,
oh5,
op4,
pa4,
po4,
an2,
ar2,
na2,
no2,
on2,
oo2,
or2,
