6	butted	5	tubed
5	debut	5	butte
4	tute	4	tube
4	duet	4	debt
4	butt	4	bute
4	bedu	3	ute
3	tut	3	tub
3	tet	3	ted
3	due	3	dub
3	deb	3	but
3	bud	3	bet
3	bed	2	ut
2	te	2	et
2	ed	2	de
2	be