5 letter words:
cobby14,
4 letter words:
cobb10,
obey9,
yebo9,
bice8,
3 letter words:
bey8,
boy8,
bye8,
coy8,
icy8,
yob8,
bib7,
bob7,
cob7,
ebb7,
oye6,
bio5,
boi5,
eco5,
ice5,
obe5,
obi5,
2 letter words:
by7,
oy5,
ye5,
yo5,
be4,
bi4,
bo4,
ob4,
io2,
oe2,
oi2,