5 letter words:
cocci11,
cisco9,
4 letter words:
cozy18,
sizy16,
zoic15,
occy11,
cosy9,
coys9,
3 letter words:
coz14,
zos12,
coy8,
icy8,
oys6,
soy6,
yos6,
cis5,
cos5,
sic5,
soc5,
ios3,
iso3,
2 letter words:
zo11,
oy5,
yo5,
io2,
is2,
oi2,
os2,
si2,
so2,