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:
# import re — I don't want any, okay?
# Input the string
string = input().lower()
# Checking the string by conformance of the condition
assert string.isalpha(), '''The string you entered have something else besides letters.'''
assert 1 <= len(string) <= 100, '''The string you entered is either never existed in the Universe
or too long than we want, sorry. *despair*'''
# Solver
out_string = ''
pattern = ('e', 'y', 'u', 'i', 'o', 'a')
for item in string:
    n = 0
    for i in range(97, 123):
        if ord(item) == i:
            break
        else:
            n += 1
    assert n != 26, '''Where is Latin's letters, mister? Blimey, I don't see them! Latin's letters should be everywhere!'''
    n = 0
    for letter in pattern:
        if item == letter:
            out_string += ''
            break
        else:
            n += 1
    if n == 6:
        out_string += '.' + item
# Output
print(out_string)