Problem: Petya started to attend programming lessons. On the first lesson his task was to write a simple program. The program was supposed to do the following: in the given string, consisting if uppercase and lowercase Latin letters, it: 

  * deletes all the vowels, 
  * inserts a character "." before each consonant, 
  * replaces all uppercase consonants with corresponding lowercase ones. 



Vowels are letters "A", "O", "Y", "E", "U", "I", and the rest are consonants. The program's input is exactly one string, it should return the output as a single string, resulting after the program's processing the initial string.

Help Petya cope with this easy task.

Input

The first line represents input string of Petya's program. This string only consists of uppercase and lowercase Latin letters and its length is from 1 to 100, inclusive.

Output

Print the resulting string. It is guaranteed that this string is not empty.

Examples

Input

tour


Output

.t.r


Input

Codeforces


Output

.c.d.f.r.c.s


Input

aBAcAba


Output

.b.c.b

Solution (in PYTHON3):

Solution:
#!/bin/python3

import math
import os
import random
import re
import sys


def update_casing(word):
    """return lowercase"""
    word = word.lower()
    return word


def delete_vowels(word):
    """remove vowels"""
    word = re.sub(r'[aeiouy]', '', word)
    return word


def insert_punctuation(word):
    """prepend remaining characters with `.`"""
    xs = [f".{char}" for char in word]
    word = ''.join(xs)
    return word


def solve(word):
    """
    delete vowels
    insert `.` before each consonant
    replace uppercase consonant with lowercase
    """
    word = update_casing(word)
    word = delete_vowels(word)
    word = insert_punctuation(word)
    return word


if __name__ == '__main__':
    s = str(input())
    result = solve(s)
    print(result)