5 letter words:
coirs7,
corso7,
crios7,
siroc7,
4 letter words:
coir6,
coos6,
cors6,
cris6,
orcs6,
rocs6,
roos4,
sori4,
3 letter words:
cis5,
coo5,
cor5,
cos5,
orc5,
roc5,
sic5,
soc5,
ios3,
iso3,
oor3,
oos3,
ors3,
roo3,
sir3,
sri3,
2 letter words:
io2,
is2,
oi2,
oo2,
or2,
os2,
si2,
so2,