6 letter words:
stucco10,
succot10,
5 letter words:
scout7,
souct7,
4 letter words:
cost6,
cots6,
cuts6,
scot6,
scut6,
tocs6,
oust4,
outs4,
sout4,
utus4,
3 letter words:
cos5,
cot5,
cut5,
soc5,
toc5,
ous3,
out3,
sot3,
sou3,
uts3,
utu3,
2 letter words:
os2,
ou2,
so2,
st2,
to2,
us2,
ut2,