9 letter words:
possesses11,
7 letter words:
possess9,
speoses9,
6 letter words:
eposes8,
posses8,
sepses8,
sesses6,
sosses6,
5 letter words:
pesos7,
poses7,
posse7,
seeps7,
speos7,
esses5,
4 letter words:
epos6,
opes6,
pees6,
peso6,
pose6,
poss6,
seep6,
seps6,
sops6,
eses4,
esse4,
oses4,
sees4,
sese4,
sess4,
soss4,
3 letter words:
ope5,
ops5,
pee5,
pes5,
pos5,
sop5,
ess3,
oes3,
ose3,
see3,
sos3,
2 letter words:
op4,
pe4,
po4,
ee2,
es2,
oe2,
os2,
so2,