diff --git a/src/main.py b/src/main.py
index 3f1ef43..2b946fd 100644
--- a/src/main.py
+++ b/src/main.py
@@ -1,9 +1,17 @@
-# Resolve the problem!!
+# Resolve the problem!
+import re
+
 
 
 def run():
     # Start coding here
+    patron = re.compile('[a-z]')
 
+    with open('encoded.txt','r',encoding='utf-8') as file:
+        mensaje_codifcado = file.read()
+        mensaje_descodificado = ''.join(patron.findall(mensaje_codifcado))
+        file.close()
+    print(mensaje_descodificado)
 
-if __name__ == '__main__':
-    run()
+if __name__ == "__main__":
+    run()
\ No newline at end of file