diff --git a/labs02/task09.py b/labs02/task09.py
index 9045054..c07d63c 100644
--- a/labs02/task09.py
+++ b/labs02/task09.py
@@ -9,7 +9,8 @@ Np. leet('leet') powinno zwrócić '1337'.
 
 
 def leet_speak(text):
-    pass
+    return tekst.replace('o', '0').replace('l', '1').replace('e', '3').replace('t', '7')
+
 
 
 def tests(f):
@@ -23,4 +24,4 @@ def tests(f):
     return "TESTS PASSED"
 
 if __name__ == "__main__":
-    print(tests(leet_speak))
+    print(tests(leet_speak))
\ No newline at end of file