#!/usr/bin/env python

import sys, re, itertools

r_single = re.compile(r"r'[^'\\]*(?:\\.[^'\\]*)*'")
r_double = re.compile(r'r"[^"\\]*(?:\\.[^"\\]*)*"')

def main(): 
   names = sys.argv[1:]

   regexen = {}
   for name in names: 
      f = open(name)
      for line in f: 
         for r_regexp in (r_single, r_double): 
            for regexp in r_regexp.findall(line): 
               if regexen.has_key(regexp): 
                  regexen[regexp].add(name)
               else: regexen[regexp] = set([name])
      f.close()

   for regexp in sorted(regexen.keys(), key=len): 
      print regexp, '-', ', '.join(sorted(regexen[regexp]))

if __name__ == '__main__': 
   main()