diff --git a/lab-3_4/P-1.29.py b/lab-3_4/P-1.29.py
index eb94f53..0af3010 100644
--- a/lab-3_4/P-1.29.py
+++ b/lab-3_4/P-1.29.py
@@ -1,4 +1,14 @@
 """
-Write a Python program that outputs all possible strings formed by using the chagacters 'c', 'a', 't', 'd', 'o', and 'g'
+Write a Python program that outputs all possible strings formed by using the characters 'c', 'a', 't', 'd', 'o', and 'g'
 exactly once.
-"""
\ No newline at end of file
+"""
+
+def permute(char_pool, current_str):
+    if len(char_pool) == 0:
+        print((current_str))
+        return
+    for i in range(len(char_pool)):
+        permute(char_pool[:i] + char_pool[i+1:], current_str + char_pool[i])
+    
+
+permute('catdog', '')
\ No newline at end of file