<?xml version="1.0" encoding="UTF-8"?><!--Created with JFLAP 6.0.--><structure>&#13;
	<type>fa</type>&#13;
	<automaton>&#13;
		<!--The list of states.-->&#13;
		<state id="0" name="q0">&#13;
			<x>76.0</x>&#13;
			<y>145.0</y>&#13;
			<initial/>&#13;
			<final/>&#13;
		</state>&#13;
		<state id="1" name="q1">&#13;
			<x>174.0</x>&#13;
			<y>148.0</y>&#13;
			<final/>&#13;
		</state>&#13;
		<state id="2" name="q2">&#13;
			<x>270.0</x>&#13;
			<y>150.0</y>&#13;
			<final/>&#13;
		</state>&#13;
		<state id="3" name="q3">&#13;
			<x>375.0</x>&#13;
			<y>150.0</y>&#13;
			<final/>&#13;
		</state>&#13;
		<state id="4" name="q4">&#13;
			<x>483.0</x>&#13;
			<y>151.0</y>&#13;
		</state>&#13;
		<!--The list of transitions.-->&#13;
		<transition>&#13;
			<from>1</from>&#13;
			<to>2</to>&#13;
			<read>a</read>&#13;
		</transition>&#13;
		<transition>&#13;
			<from>4</from>&#13;
			<to>4</to>&#13;
			<read>a,b</read>&#13;
		</transition>&#13;
		<transition>&#13;
			<from>0</from>&#13;
			<to>1</to>&#13;
			<read>a</read>&#13;
		</transition>&#13;
		<transition>&#13;
			<from>2</from>&#13;
			<to>3</to>&#13;
			<read>a</read>&#13;
		</transition>&#13;
		<transition>&#13;
			<from>3</from>&#13;
			<to>4</to>&#13;
			<read>a</read>&#13;
		</transition>&#13;
		<transition>&#13;
			<from>0</from>&#13;
			<to>0</to>&#13;
			<read>b</read>&#13;
		</transition>&#13;
		<transition>&#13;
			<from>1</from>&#13;
			<to>1</to>&#13;
			<read>b</read>&#13;
		</transition>&#13;
		<transition>&#13;
			<from>2</from>&#13;
			<to>2</to>&#13;
			<read>b</read>&#13;
		</transition>&#13;
		<transition>&#13;
			<from>3</from>&#13;
			<to>3</to>&#13;
			<read>b</read>&#13;
		</transition>&#13;
		<note>&#13;
			<text>Test this DFA.  What language does it accept?</text>&#13;
			<x>53.0</x>&#13;
			<y>24.0</y>&#13;
		</note>&#13;
	</automaton>&#13;
</structure>