5 letter words:
boose7,
bouse7,
oboes7,
4 letter words:
bios6,
bise6,
bois6,
boos6,
obes6,
obis6,
oboe6,
obos6,
euoi4,
oose4,
3 letter words:
bes5,
bio5,
bis5,
boi5,
boo5,
bos5,
bus5,
obe5,
obi5,
obo5,
obs5,
sib5,
sob5,
sub5,
ios3,
iso3,
oes3,
oos3,
ose3,
ous3,
sei3,
sou3,
sue3,
sui3,
use3,
2 letter words:
be4,
bi4,
bo4,
ob4,
es2,
io2,
is2,
oe2,
oi2,
oo2,
os2,
ou2,
si2,
so2,
us2,