6	purler	5	ruler
5	purer	5	puler
5	lurer	4	rule
4	ruer	4	purr
4	purl	4	pure
4	pule	4	lure
3	rue	3	rep
3	pur	3	pul
3	pre	3	per
3	lur	3	leu
3	err	2	up
2	re	2	pe
2	er	2	el