7	prepreg	5	repeg
4	repp	4	prep
4	pree	4	perp
4	pere	4	peer
4	peep	4	gree
4	eger	3	rep
3	reg	3	ree
3	pre	3	per
3	pep	3	peg
3	pee	3	gee
3	err	3	erg
3	ere	2	re
2	pe	2	er
2	ee