4 letter words:
cozy18,
sizy16,
zoic15,
boys9,
cosy9,
coys9,
sybo9,
yobs9,
cobs8,
bios6,
bois6,
obis6,
3 letter words:
biz14,
coz14,
zos12,
boy8,
bys8,
coy8,
icy8,
yob8,
cob7,
oys6,
soy6,
yos6,
bio5,
bis5,
boi5,
bos5,
cis5,
cos5,
obi5,
obs5,
sib5,
sic5,
sob5,
soc5,
ios3,
iso3,
2 letter words:
zo11,
by7,
oy5,
yo5,
bi4,
bo4,
ob4,
io2,
is2,
oi2,
os2,
si2,
so2,