7 letter words:
opening10,
6 letter words:
epigon9,
pening9,
pigeon9,
5 letter words:
genip8,
gipon8,
oping8,
pengo8,
pingo8,
opine7,
penni7,
pinon7,
ennog6,
4 letter words:
ping7,
pong7,
nope6,
open6,
pein6,
peni6,
peon6,
pine6,
pion6,
pone6,
gien5,
ginn5,
gone5,
ingo5,
nong5,
neon4,
nine4,
none4,
noni4,
onie4,
3 letter words:
gip6,
peg6,
pig6,
nep5,
nip5,
ope5,
pen5,
pie5,
pin5,
poi5,
ego4,
eng4,
gen4,
geo4,
gie4,
gin4,
gio4,
goe4,
gon4,
neg4,
nog4,
eon3,
inn3,
ion3,
nie3,
non3,
one3,
2 letter words:
op4,
pe4,
pi4,
po4,
gi3,
go3,
en2,
in2,
io2,
ne2,
no2,
oe2,
oi2,
on2,
