7	bazooka	5	kazoo
5	bazoo	4	kobo
4	bozo	4	book
4	boak	4	baza
3	zoo	3	zoa
3	oka	3	oba
3	oak	3	kob
3	koa	3	kab
3	boo	3	boa
3	baa	3	azo
3	aba	2	za
2	oo	2	ok
2	ka	2	bo
2	ba	2	ab
2	aa