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 PYTHON):

Solution:
"""
Author    : raj1307
Institute : Jalpaiguri Government Engineering College
Date      : 22.03.19
"""
from __future__ import division, print_function
import itertools,os,sys
#from collections import deque, Counter, OrderedDict
#from heapq import nsmallest, nlargest, heapify, #heappop ,heappush, heapreplace
#from math import ceil,floor,log,sqrt,factorial,pow,pi
#from bisect import bisect_left,bisect_right
#from decimal import *
from atexit import register
from io import BytesIO, StringIO

if sys.version_info[0]<3:
    range = xrange
    filter = itertools.ifilter
    map = itertools.imap
    zip = itertools.izip
    sys.stdin = BytesIO(os.read(0, os.fstat(0).st_size))
    sys.stdout = BytesIO()
    register(lambda: os.write(1, sys.stdout.getvalue()))
else:
    sys.stdin = StringIO(os.read(0, os.fstat(0).st_size).decode())
    sys.stdout = StringIO()
    register(lambda: os.write(1, sys.stdout.getvalue().encode()))

input = lambda: sys.stdin.readline().rstrip('\r\n')

def ii(): return int(input())
def si(): return str(input())
def mi():return map(int,input().strip().split(" "))
def li():return list(mi())

abc='abcdefghijklmnopqrstuvwxyz'
abd={'a': 0, 'b': 1, 'c': 2, 'd': 3, 'e': 4, 'f': 5, 'g': 6, 'h': 7, 'i': 8, 'j': 9, 'k': 10, 'l': 11, 'm': 12, 'n': 13, 'o': 14, 'p': 15, 'q': 16, 'r': 17, 's': 18, 't': 19, 'u': 20, 'v': 21, 'w': 22, 'x': 23, 'y': 24, 'z': 25}
def getKey(item): return item[0] 
def sort2(l):return sorted(l, key=getKey)
def d2(n,num):return [[num for x in range(n)] for y in range(n)]
def ntl(n):return [int(i) for i in str(n)]
def powerMod(x,y,p):
    res = 1
    x %= p
    while y > 0:
        if y&1:
            res = (res*x)%p
        y = y>>1
        x = (x*x)%p
    return res
def gcd(x, y):
    while y:
        x, y = y, x % y
    return x

def main():
    v=['a','e','i','o','u','A','E','I','O','U','Y','y']
    s=si()
    ss=''
    for i in s:
       if i not in v:
           ss+='.'+i.lower()
    print(ss)
    
    
    
if __name__ == "__main__":
    main()