<?xml version="1.0" encoding="UTF-8"?><!--Created with JFLAP 6.0.--><structure>&#13;
	<type>grammar</type>&#13;
	<!--The list of productions.-->&#13;
	<production>&#13;
		<left>S</left>&#13;
		<right>a</right>&#13;
	</production>&#13;
	<production>&#13;
		<left>S</left>&#13;
		<right>aa</right>&#13;
	</production>&#13;
	<production>&#13;
		<left>S</left>&#13;
		<right>aSa</right>&#13;
	</production>&#13;
	<production>&#13;
		<left>S</left>&#13;
		<right>i</right>&#13;
	</production>&#13;
	<production>&#13;
		<left>S</left>&#13;
		<right>ii</right>&#13;
	</production>&#13;
	<production>&#13;
		<left>S</left>&#13;
		<right>iSi</right>&#13;
	</production>&#13;
	<production>&#13;
		<left>S</left>&#13;
		<right>u</right>&#13;
	</production>&#13;
	<production>&#13;
		<left>S</left>&#13;
		<right>uu</right>&#13;
	</production>&#13;
	<production>&#13;
		<left>S</left>&#13;
		<right>uSu</right>&#13;
	</production>&#13;
</structure>
