5 letter words:
swoop10,
woops10,
oppos9,
poops9,
4 letter words:
pows9,
sowp9,
swop9,
wisp9,
wops9,
oppo8,
pips8,
poop8,
pops8,
woos7,
oops6,
piso6,
pois6,
poos6,
soop6,
3 letter words:
pow8,
wop8,
pip7,
pop7,
sow6,
wis6,
woo6,
wos6,
oop5,
ops5,
pis5,
poi5,
poo5,
pos5,
psi5,
sip5,
sop5,
ios3,
iso3,
oos3,
2 letter words:
ow5,
wo5,
op4,
pi4,
po4,
io2,
is2,
oi2,
oo2,
os2,
si2,
so2,