E	(a*)x		x	(0,1)(0,0)
E	(a)*x		x	(0,1)(?,?)
E	(a*)*x		x	(0,1)(0,0)
E	(a+)x		x	NOMATCH
E	(a)+x		x	NOMATCH
E	(a+)*x		x	(0,1)(?,?)
E	(a*)+x		x	(0,1)(0,0)