7 letter words:
xenopus16,
5 letter words:
expos14,
poxes14,
exons12,
nexus12,
noxes12,
unsex12,
noups7,
opens7,
peons7,
pones7,
snoep7,
4 letter words:
expo13,
exon11,
oxen11,
oxes11,
epos6,
neps6,
nope6,
noup6,
open6,
opes6,
opus6,
oups6,
pens6,
peon6,
peso6,
pone6,
pons6,
pose6,
puns6,
soup6,
spue6,
spun6,
supe6,
upon6,
eons4,
noes4,
nose4,
nous4,
ones4,
onus4,
sone4,
3 letter words:
pox12,
exo10,
nox10,
sex10,
sox10,
nep5,
ope5,
ops5,
oup5,
pen5,
pes5,
pos5,
pun5,
pus5,
sop5,
sup5,
upo5,
ups5,
ens3,
eon3,
nos3,
nus3,
oes3,
one3,
ons3,
ose3,
ous3,
sen3,
son3,
sou3,
sue3,
sun3,
uns3,
use3,
2 letter words:
ex9,
ox9,
xu9,
op4,
pe4,
po4,
up4,
en2,
es2,
ne2,
no2,
nu2,
oe2,
on2,
os2,
ou2,
so2,
un2,
us2,