--- a/progs/re.py	Sun Aug 21 00:43:31 2016 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,12 +0,0 @@
-#!/usr/bin/env python
-import re
-import sys
-
-cn = sys.argv[1]
-
-r1 = '((a?){%s})' % cn
-r2 = 'a{%s}' % cn
-
-m = re.match(r1 + r2 , "a" * int(cn)) 
-
-print m.group(0)