:RE#36:E	(a(b)?)+		aba	(0,3)(2,3)(?,?)
E		(a(b?))+		aba	(0,3)(2,3)(3,3)
:RE#83:E	(aa(b(b))?)+		aabbaa	(0,6)(4,6)(?,?)(?,?)
E		zz|(aa(b(b))?)+		aabbaa	(0,6)(4,6)(?,?)(?,?)
E		(zz|aa(b(b))?)+		aabbaa	(0,6)(4,6)(?,?)(?,?)