4 letter words:
bozo15,
zobo15,
zoon13,
boon6,
noop6,
pion6,
poon6,
3 letter words:
biz14,
poz14,
zip14,
zin12,
zoo12,
bop7,
bin5,
bio5,
boi5,
bon5,
boo5,
nib5,
nip5,
nob5,
obi5,
obo5,
oop5,
pin5,
poi5,
poo5,
ion3,
noo3,
ono3,
oon3,
2 letter words:
zo11,
bi4,
bo4,
ob4,
op4,
pi4,
po4,
in2,
io2,
no2,
oi2,
on2,
oo2,