#!/usr/bin/python

# Copyright (C) 2014 Steve Litt, Expat license, http://directory.fsf.org/wiki/License:Expat

import sys
import re


def next_valid_line(regex):
   while True:
       try:
           line = sys.stdin.readline()
       except:
           raise
           break
       else:
           if not line:
               yield(None)
               break
           elif re.search(regex, line):
               yield(line.strip())

def loopem(regex):
    generator = next_valid_line(regex)
    for line in generator:
        if line:
            print(line)

def one_by_one(regex):
    generator  = next_valid_line(regex)
    for ss in range(10,56):
        if ss%2 == 0:
            line = next(generator)
            if line:
                print('Line {}, {}'.format(str(ss), line))
            else:
                break

loopem('^UUID')
#one_by_one('^UUID')