diff --git a/Homework/labs02/task11_rev.py b/Homework/labs02/task11_rev.py
new file mode 100644
index 0000000..1b46617
--- /dev/null
+++ b/Homework/labs02/task11_rev.py
@@ -0,0 +1,33 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+
+"""
+Napisz funkcję common_chars(string1, string2), która zwraca alfabetycznie
+uporządkowaną listę wspólnych liter z lańcuchów string1 i string2.
+Oba napisy będą składać się wyłacznie z małych liter.
+"""
+
+def common_chars(string1, string2):
+    temp=[]
+    str1 = list(set(string1.replace(' ', '')))
+    str2 = list(set(string2.replace(' ', '')))
+    for i in str1:
+        if i in str2:
+            temp.append(i)
+    temp.sort()
+    return temp
+
+
+def tests(f):
+    inputs = [["this is a string", "ala ma kota"]]
+    outputs = [['a', 't']]
+
+    for input, output in zip(inputs, outputs):
+        if f(*input) != output:
+            return "ERROR: {}!={}".format(f(*input), output)
+            break
+    return "TESTS PASSED"
+
+if __name__ == "__main__":
+    print(tests(common_chars))
diff --git a/Homework/labs02/task_07_rev.py b/Homework/labs02/task_07_rev.py
new file mode 100644
index 0000000..e4abe59
--- /dev/null
+++ b/Homework/labs02/task_07_rev.py
@@ -0,0 +1,37 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+#text = [["aaa"], ["bbb"], ["this is another string"]]
+#text = "aaa"
+text = [["this is a string"], ["this is another string"]]
+
+def char_sum(text):
+    if isinstance(text, str):
+        def form_ascii(text):
+            print(sum(map(ord, text)))
+        return form_ascii(text)
+    elif isinstance(text, list):
+        def ascii_list(text):
+            loc = [sub_list[0] for sub_list in text]
+            for i in loc:
+                print(sum(map(ord, i)))
+        return ascii_list(text)
+    else:
+        print("try harder")
+
+
+char_sum(text)
+
+
+def tests(f):
+    inputs = [["this is a string"], ["this is another string"]]
+    outputs = [1516, 2172]
+
+    for input, output in zip(inputs, outputs):
+        if f(*input) != output:
+            return "ERROR: {}!={}".format(f(*input), output)
+            break
+    return "TESTS PASSED"
+
+if __name__ == "__main__":
+    print(tests(char_sum))
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