6	ridder	5	rider
5	redid	5	drier
5	dried	5	direr
4	ride	4	redd
4	ired	4	dire
4	died	4	deid
3	rid	3	red
3	ire	3	ide
3	err	3	die
3	did	3	der
2	re	2	id
2	er	2	ed
2	de