6 letter words:
pogoer9,
operon8,
orgone7,
orogen7,
5 letter words:
grope8,
pengo8,
pongo8,
porge8,
prong8,
porno7,
prone7,
ergon6,
genro6,
goner6,
grone6,
negro6,
roneo5,
4 letter words:
goop7,
gorp7,
pogo7,
pong7,
prog7,
noop6,
nope6,
open6,
peon6,
pern6,
pone6,
poon6,
poor6,
pore6,
porn6,
proo6,
repo6,
roop6,
rope6,
ergo5,
goer5,
gone5,
goon5,
goor5,
gore5,
gren5,
ogre5,
rego5,
rong5,
oner4,
rone4,
roon4,
3 letter words:
peg6,
nep5,
oop5,
ope5,
pen5,
per5,
poo5,
pre5,
pro5,
rep5,
ego4,
eng4,
erg4,
gen4,
geo4,
goe4,
gon4,
goo4,
gor4,
neg4,
nog4,
reg4,
eon3,
ern3,
noo3,
nor3,
one3,
ono3,
oon3,
oor3,
ore3,
ren3,
reo3,
roe3,
roo3,
2 letter words:
op4,
pe4,
po4,
go3,
en2,
er2,
ne2,
no2,
oe2,
on2,
oo2,
or2,
re2,