diff --git a/.gitignore b/.gitignore
index 84c0a09..9ec79b7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1 @@
-test_dir1
-test_dir2
\ No newline at end of file
+test_dir*
\ No newline at end of file
diff --git a/create_file_structure.py b/create_file_structure.py
index 7c5d61a..ecc4c04 100644
--- a/create_file_structure.py
+++ b/create_file_structure.py
@@ -23,11 +23,18 @@ def create_test_directory(base_dir, num_files=5, duplicate_files=2, depth=1):
                 duplicate = os.path.join(dir, f"dup_{dup_num}_{file_names[i]}")
                 shutil.copyfile(original, duplicate)
 
+def copy_directory_contents(src, dst):
+    if os.path.exists(dst):
+        shutil.rmtree(dst)
+    shutil.copytree(src, dst)
+
 def create_file_structure(depth, num_files, duplicate_files):
     base_dirs = ['test_dir1', 'test_dir2']
     for base_dir in base_dirs:
         create_test_directory(base_dir, num_files, duplicate_files, depth)
 
+    copy_directory_contents('test_dir1', 'test_dir3')
+
     print("Test file structure created.")
 
 if __name__ == "__main__":