9 letter words:
perspexes20,
7 letter words:
perspex18,
express16,
peepers11,
peeress9,
6 letter words:
prexes15,
peeper10,
perses8,
speers8,
sprees8,
resees6,
5 letter words:
rexes12,
sexes12,
peeps9,
perps9,
preps9,
repps9,
epees7,
peers7,
peres7,
perse7,
prees7,
prese7,
press7,
seeps7,
speer7,
spree7,
erses5,
resee5,
seers5,
seres5,
4 letter words:
prex13,
exes11,
peep8,
peps8,
perp8,
prep8,
repp8,
epee6,
peer6,
pees6,
pere6,
pree6,
reps6,
seep6,
eses4,
rees4,
seer4,
sees4,
sere4,
sers4,
3 letter words:
rex10,
sex10,
pep7,
pee5,
per5,
pes5,
rep5,
ere3,
ers3,
ess3,
ree3,
res3,
see3,
ser3,
2 letter words:
ex9,
pe4,
er2,
es2,
re2,