4 letter words:
bozo15,
zobo15,
zobu15,
ouzo13,
budo7,
doob7,
doup7,
pood7,
updo7,
3 letter words:
poz14,
dzo13,
zoo12,
bop7,
pub7,
bod6,
bud6,
dob6,
dop6,
dub6,
dup6,
pod6,
pud6,
boo5,
obo5,
oop5,
oup5,
poo5,
upo5,
doo4,
duo4,
oud4,
udo4,
2 letter words:
zo11,
bo4,
ob4,
op4,
po4,
up4,
do3,
od3,
oo2,
ou2,