diff --git a/Top150Interview/22_Generate_Parenthesis.py b/Top150Interview/22_Generate_Parenthesis.py
index fc5f45a..b9f9201 100644
--- a/Top150Interview/22_Generate_Parenthesis.py
+++ b/Top150Interview/22_Generate_Parenthesis.py
@@ -1,7 +1,25 @@
-def generateParenthesis(n):
+def generateParenthesis(n: int) -> List[str]:
     """
     :type n: int
     :rtype: List[str]
     """
+    stack = []
+    pairs = ""
+    opening_brackets = {'('}
+    closing_brackets = {')'}
+    bracket_pairs = {')': '('}
+
+    # Create n pairs
+    for i in range(n):
+        pairs += "()"
+    # print(pairs)
     
+    # Create and filter permutations
+    for pair in permutations(pairs):
+        parenthesis = "".join(pair)
+        # print(pair)
+        # print(parenthesis)
+        if parenthesis in bracket_pairs.keys():
+            if not stack or stack[-1] != bracket_pairs[parenthesis]:
+                print('bad')    
 generateParenthesis(3)
\ No newline at end of file