5 letter words:
posts7,
spots7,
stops7,
snots5,
4 letter words:
opts6,
pons6,
post6,
pots6,
psst6,
sops6,
spot6,
stop6,
tops6,
snot4,
sons4,
sots4,
tons4,
toss4,
3 letter words:
ops5,
opt5,
pot5,
pst5,
sop5,
top5,
nos3,
not3,
ons3,
son3,
sos3,
sot3,
ton3,
2 letter words:
op4,
no2,
on2,
os2,
so2,
to2,