diff --git a/examples/DFSM1IS.xml b/examples/automaton/DFSM1IS.xml
similarity index 100%
rename from examples/DFSM1IS.xml
rename to examples/automaton/DFSM1IS.xml
diff --git a/examples/FSM.xml b/examples/automaton/FSM.xml
similarity index 100%
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rename to examples/automaton/FSM.xml
diff --git a/examples/FSM2.xml b/examples/automaton/FSM2.xml
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diff --git a/examples/NFSM1.DET.xml b/examples/automaton/NFSM1.DET.xml
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diff --git a/examples/NFSM1.xml b/examples/automaton/NFSM1.xml
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diff --git a/examples/NFSM2.xml b/examples/automaton/NFSM2.xml
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diff --git a/examples/NFSM3.xml b/examples/automaton/NFSM3.xml
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diff --git a/examples/NFSM4.xml b/examples/automaton/NFSM4.xml
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diff --git a/examples/NIDPDA1.xml b/examples/automaton/NIDPDA1.xml
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diff --git a/examples/NIDPDA2.xml b/examples/automaton/NIDPDA2.xml
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diff --git a/examples/NIDPDA3.xml b/examples/automaton/NIDPDA3.xml
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diff --git a/examples/NIDPDA4.xml b/examples/automaton/NIDPDA4.xml
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diff --git a/examples/PDA.xml b/examples/automaton/PDA.xml
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diff --git a/examples/RHDPDA2.xml b/examples/automaton/RHDPDA2.xml
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diff --git a/examples/RHDPDA3.xml b/examples/automaton/RHDPDA3.xml
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diff --git a/examples/TM.xml b/examples/automaton/TM.xml
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diff --git a/examples/TM2.xml b/examples/automaton/TM2.xml
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diff --git a/examples/TM3.xml b/examples/automaton/TM3.xml
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diff --git a/examples/VPA1.xml b/examples/automaton/VPA1.xml
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diff --git a/examples/VPA2.xml b/examples/automaton/VPA2.xml
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diff --git a/examples/string/empty.xml b/examples/string/empty.xml
new file mode 100644
index 0000000000000000000000000000000000000000..de8c746eb7c0be98bdae0e9f420a0650675722f7
--- /dev/null
+++ b/examples/string/empty.xml
@@ -0,0 +1,10 @@
+<string>
+	<alphabet>
+		<symbol>a</symbol>
+		<symbol>c</symbol>
+		<symbol>t</symbol>
+		<symbol>g</symbol>
+	</alphabet>
+	<content>
+	</content>
+</string>
diff --git a/examples/string/word.xml b/examples/string/word.xml
new file mode 100644
index 0000000000000000000000000000000000000000..fc94c10ad13ed69d8ec96dcbe37281d0075bc9e9
--- /dev/null
+++ b/examples/string/word.xml
@@ -0,0 +1,21 @@
+<string>
+	<alphabet>
+		<symbol>a</symbol>
+		<symbol>c</symbol>
+		<symbol>t</symbol>
+		<symbol>g</symbol>
+	</alphabet>
+	<content>
+		<symbol>a</symbol>
+		<symbol>t</symbol>
+		<symbol>t</symbol>
+		<symbol>c</symbol>
+		<symbol>g</symbol>
+		<symbol>c</symbol>
+		<symbol>c</symbol>
+		<symbol>g</symbol>
+		<symbol>t</symbol>
+		<symbol>t</symbol>
+		<symbol>a</symbol>
+	</content>
+</string>