#!/usr/bin/env python3

# Challenge 110
#
# TASK #1 - Valid Phone Numbers
# Submitted by: Mohammad S Anwar
# You are given a text file.
#
# Write a script to display all valid phone numbers in the given text file.
#
# Acceptable Phone Number Formats
# +nn  nnnnnnnnnn
# (nn) nnnnnnnnnn
# nnnn nnnnnnnnnn
# Input File
# 0044 1148820341
#  +44 1148820341
#   44-11-4882-0341
# (44) 1148820341
#   00 1148820341
# Output
# 0044 1148820341
#  +44 1148820341
# (44) 1148820341

import fileinput
import sys
import re

def is_valid_phone(phone):
    return re.match(r"^\s*(?:\+\d{2}|\(\d{2}\)|\d{4})\s+\d{10}\s*$", phone)

def filter_input():
    for phone in fileinput.input():
        phone = phone.strip()
        if is_valid_phone(phone):
            print(phone)

filter_input()