diff --git a/src/com/imegumii/Automata.java b/src/com/imegumii/Automata.java
index b5472d3..165c90a 100644
--- a/src/com/imegumii/Automata.java
+++ b/src/com/imegumii/Automata.java
@@ -16,7 +16,7 @@ public class Automata <T extends Comparable> {
     protected SortedSet<T> beginStates;
     protected SortedSet<T> eindStates;
 
-    private SortedSet<Character> symbols;
+    protected SortedSet<Character> symbols;
 
     public Automata(Character [] symbols) {
         this(new TreeSet<Character>(Arrays.asList(symbols)));
diff --git a/src/com/imegumii/DFA.java b/src/com/imegumii/DFA.java
index 3674ea8..6d02c83 100644
--- a/src/com/imegumii/DFA.java
+++ b/src/com/imegumii/DFA.java
@@ -1,7 +1,10 @@
 package com.imegumii;
 
+import com.sun.source.util.Trees;
+
 import java.util.Iterator;
 import java.util.SortedSet;
+import java.util.TreeSet;
 
 /**
  * Created by imegumii on 01/05/2017.
@@ -12,11 +15,11 @@ public class DFA<T extends Comparable> extends Automata<T> {
         super(symbols);
     }
 
-    public DFA(SortedSet symbols) {
+    public DFA(SortedSet<Character> symbols) {
         super(symbols);
     }
 
-    boolean accepteer(String s) {
+    public boolean accepteer(String s) {
         // bij een DFA is er maar een beginstate, dus gebruiken we first.
         T beginState = this.beginStates.first();
         T currentState = beginState;
@@ -40,7 +43,28 @@ public class DFA<T extends Comparable> extends Automata<T> {
         return this.eindStates.contains(currentState);
     }
 
-    void geefTaalTotLengte(int n) {
+    private TreeSet<String> addSymbols(int n, TreeSet<String> tempSet) {
+        TreeSet<String> tempGenerated = new TreeSet<>(tempSet);
+        if (n == 0) {
+            return tempGenerated;
+        }
 
+        for(String s : tempSet) {
+            for(Character c : this.symbols) {
+                tempGenerated.add(s + c);
+            }
+        }
+
+        tempGenerated.addAll(addSymbols(n - 1, tempGenerated));
+
+        return tempGenerated;
+    }
+
+    public Taal geefTaalTotLengte(int n) {
+        TreeSet<String> taal = new TreeSet<>();
+        for (Character c : this.symbols) {
+            taal.add("" + c);
+        }
+        return new Taal(addSymbols(n - 1, taal));
     }
 }
diff --git a/src/com/imegumii/Main.java b/src/com/imegumii/Main.java
index 030f300..cb7fba7 100644
--- a/src/com/imegumii/Main.java
+++ b/src/com/imegumii/Main.java
@@ -6,19 +6,10 @@ import java.util.TreeSet;
 
 public class Main {
 
-    public static void Practicum1Opdr1() {
-        TreeSet<String> stringsToParse = new TreeSet<>();
-        stringsToParse.add("abbaa");
-        stringsToParse.add("babaa");
-        stringsToParse.add("abbaaabaab");
-        stringsToParse.add("abaab");
-        stringsToParse.add("aaaabba");
-        stringsToParse.add("baab");
-        stringsToParse.add("baaba");
-        stringsToParse.add("baabaabba");
-
+    public static void P1Opdracht1(TreeSet<String> stringsToParse) {
         Character [] characters = {'a', 'b'};
         DFA<String> myAutomata = new DFA<String>(characters);
+
         // AAB
         myAutomata.addTransition(new Transition<String>("q0", 'a', "q1"));
 
@@ -50,16 +41,32 @@ public class Main {
         myAutomata.defineAsEndState("q7");
 
         myAutomata.printTransitions();
-        final long[] totalTime = {0};
-        stringsToParse.forEach((s) -> {
+        final long[] startTime = {System.currentTimeMillis()};
+        myAutomata.geefTaalTotLengte(10).getSymbols().forEach((s) -> {
             long before = System.currentTimeMillis();
             boolean result = myAutomata.accepteer(s);
             long after = System.currentTimeMillis();
             long delta = (after-before);
             System.out.println("string " + s + " fully parsed, result: " + result + " , it took " + delta + " ms");
-            totalTime[0] += delta;
+            startTime[0] += delta;
         });
-        System.out.println(totalTime[0]);
+        System.out.println((System.currentTimeMillis() - startTime[0]));
+    }
+
+    public static void Practicum1() {
+        TreeSet<String> stringsToParse = new TreeSet<>();
+        stringsToParse.add("abbaa");
+        stringsToParse.add("babaa");
+        stringsToParse.add("abbaaabaab");
+        stringsToParse.add("abaab");
+        stringsToParse.add("aaaabba");
+        stringsToParse.add("baab");
+        stringsToParse.add("baaba");
+        stringsToParse.add("baabaabba");
+        stringsToParse.add("aaaaabb"); // this is wrong, something is wrong
+
+
+        P1Opdracht1(stringsToParse);
     }
 
     public static void main(String[] args) {
@@ -68,7 +75,7 @@ public class Main {
 //        t1.printTransitions();
         System.out.println("Zo moet het dus, nu onze beurt.");
 
-        Practicum1Opdr1();
+        Practicum1();
 
     }
 }
diff --git a/src/com/imegumii/Taal.java b/src/com/imegumii/Taal.java
new file mode 100644
index 0000000..c64838d
--- /dev/null
+++ b/src/com/imegumii/Taal.java
@@ -0,0 +1,18 @@
+package com.imegumii;
+
+import java.util.SortedSet;
+
+/**
+ * Created by imegumii on 02/05/2017.
+ */
+public class Taal {
+    private SortedSet<String> symbols;
+
+    public Taal(SortedSet<String> sortedSet) {
+        this.symbols = sortedSet;
+    }
+
+    public SortedSet<String> getSymbols() {
+        return symbols;
+    }
+}