diff --git a/labs02/task11.py b/labs02/task11.py
index de296d4..1705b5f 100644
--- a/labs02/task11.py
+++ b/labs02/task11.py
@@ -9,11 +9,26 @@ Oba napisy będą składać się wyłacznie z małych liter.
 """
 
 def common_chars(string1, string2):
-    slowo = sort(sum(c1 == c2 for c1, c2 in zip(string1, string2)))
-print (slowo)
+
+    string1 = set(string1.replace(" ",""))
+    string2 = set(string2.replace(" ",""))
+
+    common = []
+    for c1 in string1:
+        for c2 in string2:
+            if c1 == c2:
+                common.append(c1)
+                common.sort()
+    return common
 
 
 
+
+
+    # slowo = sum( c1 == c2 for c1, c2 in zip(string1, string2))
+    # print(slowo)
+    # return slowo
+
 def tests(f):
     inputs = [["this is a string", "ala ma kota"]]
     outputs = [['a', 't']]