7 letter words:
spigots10,
6 letter words:
gossip9,
spigot9,
posits8,
ptosis8,
5 letter words:
pisos7,
posit7,
posts7,
spits7,
spots7,
stops7,
topis7,
gists6,
4 letter words:
gips7,
pigs7,
opts6,
piso6,
piss6,
pits6,
pois6,
post6,
pots6,
psis6,
psst6,
sips6,
sops6,
spit6,
spot6,
stop6,
tips6,
topi6,
tops6,
gist5,
gits5,
togs5,
sits4,
sots4,
toss4,
3 letter words:
gip6,
pig6,
ops5,
opt5,
pis5,
pit5,
poi5,
pot5,
psi5,
pst5,
sip5,
sop5,
tip5,
top5,
git4,
gos4,
got4,
tog4,
its3,
sis3,
sit3,
sos3,
sot3,
tis3,
2 letter words:
op4,
pi4,
go3,
is2,
it2,
oi2,
os2,
si2,
so2,
ti2,
to2,
