5 letter words:
kazoo18,
bazoo16,
gazoo15,
4 letter words:
bozo15,
back12,
bock12,
book10,
cook10,
kobo10,
gook9,
gobo7,
3 letter words:
coz14,
zag13,
azo12,
zoa12,
zoo12,
kab9,
kob9,
cab7,
cob7,
koa7,
oak7,
oka7,
bag6,
bog6,
cog6,
gab6,
gob6,
abo5,
boa5,
boo5,
coo5,
oba5,
oca5,
ago4,
goa4,
goo4,
2 letter words:
za11,
ka6,
ab4,
ba4,
bo4,
ag3,
go3,