diff --git a/nka_vorlage.py b/nka_vorlage.py
index a2e8106..7bce188 100644
--- a/nka_vorlage.py
+++ b/nka_vorlage.py
@@ -14,7 +14,29 @@ def scan_word( state, word, stack ):
     word = word[1:] # Ersten Buchstaben vom Restwort abtrennen
 
     # Übergangsfunktion
-
+    if state == 0:
+        if stack_char == "#":
+            if char == "a":
+                return scan_word(0,word,["A","#"]+stack)
+            elif char == "b":
+                return scan_word(0,word,["B","#"]+stack)
+        elif stack_char == "A":
+            if char == "a":
+                return scan_word(0,word,["A","A"]+stack) or scan_word(1,word,stack)
+            elif char == "b":
+                return scan_word(0,word,["B","A"]+stack)
+        elif stack_char == "B":
+            if char == "a":
+                return scan_word(0,word,["A","B"]+stack)
+            elif char == "b":
+                return scan_word(0,word,["B","B"]+stack) or scan_word(1,word,stack)
+    elif state == 1:
+        if stack_char == "A":
+            if char == "a":
+                return scan_word(1,word,stack)
+        elif stack_char == "B":
+            if char == "b":
+                return scan_word(1,word,stack)
     # Übergänge und Rekursionsaufrufe
     # siehe nka_anbn.py für ein Beispiel