5 letter words:
zooid15,
widow12,
4 letter words:
zouk17,
bozo15,
zobo15,
zobu15,
ouzo13,
boko10,
book10,
bouk10,
buik10,
kobo10,
dook9,
douk9,
kudo9,
wood8,
budi7,
budo7,
doob7,
3 letter words:
wiz15,
biz14,
dzo13,
zoo12,
kow10,
wok10,
bok9,
kob9,
wow9,
bow8,
kid8,
dow7,
koi7,
oik7,
ouk7,
wud7,
bid6,
bod6,
bud6,
dib6,
dob6,
dub6,
woo6,
bio5,
boi5,
boo5,
obi5,
obo5,
doo4,
dui4,
duo4,
oud4,
udo4,
2 letter words:
zo11,
ki6,
ko6,
ow5,
wo5,
bi4,
bo4,
ob4,
di3,
do3,
id3,
od3,
io2,
oi2,
oo2,
ou2,