6 letter words:
prosos8,
sopors8,
spoors8,
5 letter words:
proso7,
pross7,
roops7,
soops7,
sopor7,
spoor7,
4 letter words:
oops6,
poor6,
poos6,
poss6,
proo6,
pros6,
roop6,
soop6,
sops6,
roos4,
3 letter words:
oop5,
ops5,
poo5,
pos5,
pro5,
sop5,
oor3,
oos3,
ors3,
roo3,
sos3,
2 letter words:
op4,
po4,
oo2,
or2,
os2,
so2,