7 letter words:
bazooka22,
5 letter words:
kazoo18,
bazoo16,
4 letter words:
bozo15,
zobo15,
boak10,
boko10,
book10,
kobo10,
3 letter words:
azo12,
zoa12,
zoo12,
bok9,
kab9,
kob9,
aka7,
koa7,
oak7,
oka7,
aba5,
abo5,
baa5,
boa5,
boo5,
oba5,
obo5,
2 letter words:
za11,
zo11,
ka6,
ko6,
ab4,
ba4,
bo4,
ob4,
aa2,
oo2,
