9 letter words:
pronephra16,
7 letter words:
propane11,
6 letter words:
happen13,
hopper13,
harper11,
orphan11,
napper10,
proper10,
rappen10,
rapper10,
perron8,
5 letter words:
ephor10,
hoper10,
phone10,
raphe10,
nappe9,
paper9,
preop9,
heron8,
honer8,
apron7,
arpen7,
opera7,
paeon7,
pareo7,
parer7,
prone7,
raper7,
repro7,
roper7,
reran5,
4 letter words:
epha9,
harp9,
heap9,
hope9,
opah9,
phon9,
pepo8,
perp8,
pope8,
prep8,
prop8,
repp8,
haen7,
hare7,
hear7,
hern7,
hero7,
hoar7,
hoer7,
hone7,
hora7,
horn7,
rhea7,
aper6,
nape6,
neap6,
nope6,
open6,
pane6,
pare6,
parr6,
pean6,
pear6,
peon6,
pone6,
pore6,
porn6,
prao6,
proa6,
rape6,
reap6,
repo6,
rope6,
aeon4,
aero4,
earn4,
near4,
orra4,
rare4,
rear4,
roan4,
roar4,
3 letter words:
hap8,
hep8,
hop8,
pah8,
peh8,
poh8,
app7,
pap7,
pep7,
pop7,
hae6,
hao6,
hen6,
her6,
hoe6,
hon6,
nah6,
noh6,
rah6,
rho6,
ape5,
apo5,
nap5,
ope5,
pan5,
par5,
pea5,
pen5,
per5,
pro5,
rap5,
rep5,
ane3,
are3,
ear3,
eon3,
era3,
ern3,
err3,
nae3,
nor3,
oar3,
one3,
ora3,
ore3,
ran3,
roe3,
2 letter words:
ah5,
eh5,
ha5,
he5,
ho5,
oh5,
op4,
pa4,
pe4,
ae2,
an2,
ar2,
en2,
er2,
na2,
ne2,
no2,
oe2,
on2,
or2,
re2,