diff --git a/runall.py b/runall.py
index b29cdab..b0d8b26 100644
--- a/runall.py
+++ b/runall.py
@@ -57,7 +57,7 @@ if __name__ == '__main__':
         ("1", "1"),
         ("2", "2"),
         ("3", "3"),
-    ), max_length=2)
+    ), max_length=3)
 
     # Successor
     print("\nSearching for successor")