5 letter words:
zobus16,
4 letter words:
zobu15,
bibs8,
bobs8,
bubo8,
bubs8,
sibb8,
bios6,
bois6,
obis6,
3 letter words:
biz14,
zos12,
bib7,
bob7,
bub7,
bio5,
bis5,
boi5,
bos5,
bus5,
obi5,
obs5,
sib5,
sob5,
sub5,
ios3,
iso3,
ous3,
sou3,
sui3,
2 letter words:
zo11,
bi4,
bo4,
ob4,
io2,
is2,
oi2,
os2,
ou2,
si2,
so2,
us2,