5 letter words:
pouts7,
spout7,
sputa7,
stoup7,
stupa7,
autos5,
4 letter words:
apos6,
atop6,
opts6,
opus6,
past6,
pats6,
post6,
pots6,
pout6,
puts6,
soap6,
soup6,
spat6,
spot6,
stop6,
taps6,
tops6,
tups6,
upas6,
auto4,
oast4,
oats4,
oust4,
outs4,
stoa4,
taos4,
taus4,
utas4,
3 letter words:
apo5,
apt5,
asp5,
ops5,
opt5,
pas5,
pat5,
pot5,
pst5,
pus5,
put5,
sap5,
sop5,
spa5,
sup5,
tap5,
top5,
tup5,
upo5,
ups5,
oat3,
out3,
sat3,
sau3,
sot3,
sou3,
tao3,
tas3,
tau3,
uta3,
uts3,
2 letter words:
op4,
pa4,
up4,
as2,
at2,
os2,
so2,
ta2,
to2,
us2,
ut2,