9 letter words:
apoptosis13,
7 letter words:
papists11,
postops11,
ostosis7,
6 letter words:
papist10,
postop10,
astoop8,
pastis8,
patios8,
patois8,
posits8,
potass8,
ptosis8,
spaits8,
spoots8,
stipas8,
stoops8,
assist6,
assots6,
sissoo6,
stasis6,
5 letter words:
apoop9,
oppos9,
pipas9,
poops9,
apsis7,
apsos7,
aspis7,
pasts7,
patio7,
pisos7,
pitas7,
poots7,
posit7,
posts7,
psoai7,
psoas7,
soaps7,
soops7,
spait7,
spats7,
spits7,
spoot7,
spots7,
staps7,
stipa7,
stoop7,
stops7,
tapis7,
topis7,
topoi7,
topos7,
assot5,
iotas5,
oasis5,
oasts5,
ossia5,
ostia5,
saist5,
satis5,
sists5,
soots5,
stoai5,
stoas5,
stoss5,
tosas5,
4 letter words:
apps8,
oppo8,
paps8,
pipa8,
pips8,
poop8,
pops8,
apos6,
apso6,
apts6,
asps6,
atop6,
oops6,
opts6,
pais6,
pass6,
past6,
pats6,
pias6,
piso6,
piss6,
pita6,
pits6,
poas6,
pois6,
poos6,
poot6,
poss6,
post6,
pots6,
psis6,
psst6,
saps6,
sips6,
soap6,
soop6,
sops6,
spas6,
spat6,
spit6,
spot6,
stap6,
stop6,
taps6,
tips6,
topi6,
topo6,
tops6,
aits4,
iota4,
isos4,
itas4,
oast4,
oats4,
oots4,
ossa4,
sais4,
sass4,
sati4,
siss4,
sist4,
sits4,
soot4,
soss4,
sots4,
stoa4,
tais4,
taos4,
tass4,
tosa4,
toss4,
3 letter words:
app7,
pap7,
pip7,
pop7,
apo5,
apt5,
asp5,
oop5,
ops5,
opt5,
pas5,
pat5,
pia5,
pis5,
pit5,
poa5,
poi5,
poo5,
pos5,
pot5,
psi5,
pst5,
sap5,
sip5,
sop5,
spa5,
tap5,
tip5,
top5,
ais3,
ait3,
ass3,
ios3,
iso3,
ita3,
its3,
oat3,
oos3,
oot3,
sai3,
sat3,
sis3,
sit3,
sos3,
sot3,
tai3,
tao3,
tas3,
tis3,
too3,
2 letter words:
op4,
pa4,
pi4,
po4,
ai2,
as2,
at2,
io2,
is2,
it2,
oi2,
oo2,
os2,
si2,
so2,
st2,
ta2,
ti2,
to2,