5 letter words:
ponts7,
4 letter words:
pops8,
opts6,
pons6,
pont6,
post6,
pots6,
spot6,
stop6,
tops6,
onst4,
snot4,
tons4,
3 letter words:
pop7,
ops5,
opt5,
pos5,
pot5,
pst5,
sop5,
top5,
nos3,
not3,
ons3,
son3,
sot3,
ton3,
2 letter words:
op4,
po4,
no2,
on2,
os2,
so2,
st2,
to2,