6	ruboff	5	buffo
4	ruff	4	four
4	forb	4	buff
4	boff	3	urb
3	rub	3	rob
3	our	3	orf
3	orb	3	off
3	fur	3	fub
3	fro	3	fou
3	for	3	fob
3	bur	3	bro
3	bff	2	ou
2	or	2	of
2	fu	2	bo