diff -r 52263ffd17b9 -r 681c36b2af27 progs/catastrophic.py
--- a/progs/catastrophic.py	Sun Nov 24 16:30:34 2019 +0000
+++ b/progs/catastrophic.py	Thu Nov 28 08:18:57 2019 +0000
@@ -19,3 +19,4 @@
 m = re.match('(a*)*b' , s) 
 
 print s
+print m