diff --git a/labs02/task09.py b/labs02/task09.py
index 9045054..14f2e72 100644
--- a/labs02/task09.py
+++ b/labs02/task09.py
@@ -9,7 +9,20 @@ Np. leet('leet') powinno zwrócić '1337'.
 
 
 def leet_speak(text):
-    pass
+    new_text=[]
+    for i in range(len(text)):
+        if text[i] == 'e':
+            new_text.append('3')
+        elif text[i] == 'l':
+            new_text.append('1')
+        elif text[i] == 'o':
+            new_text.append('0')
+        elif text[i] == 't':
+            new_text.append('7')
+        else:
+            new_text.append(text[i])
+    return ("".join(new_text))
+
 
 
 def tests(f):
@@ -24,3 +37,5 @@ def tests(f):
 
 if __name__ == "__main__":
     print(tests(leet_speak))
+
+