6 letter words:
bunion8,
5 letter words:
onion5,
union5,
4 letter words:
bozo15,
zobo15,
zobu15,
ouzo13,
zoon13,
boon6,
boun6,
bunn6,
noni4,
noon4,
noun4,
3 letter words:
biz14,
zin12,
zoo12,
bin5,
bio5,
boi5,
bon5,
boo5,
bun5,
nib5,
nob5,
nub5,
obi5,
obo5,
inn3,
ion3,
non3,
noo3,
nun3,
ono3,
oon3,
uni3,
2 letter words:
zo11,
bi4,
bo4,
ob4,
in2,
io2,
no2,
nu2,
oi2,
on2,
oo2,
ou2,
un2,