5 letter words:
coits7,
stoic7,
4 letter words:
cist6,
cito6,
cits6,
coit6,
cost6,
cots6,
otic6,
scot6,
tics6,
tocs6,
3 letter words:
cis5,
cit5,
cos5,
cot5,
sic5,
soc5,
tic5,
toc5,
ios3,
iso3,
its3,
sit3,
sot3,
tis3,
2 letter words:
io2,
is2,
it2,
oi2,
os2,
si2,
so2,
st2,
ti2,
to2,