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:
# Description of problem found at http://codeforces.com/problemset/problem/71/A


def main():
    out_word = ""
    in_word = input().lower()
    
    # Just learned len() is O(1)! neat.
    for character in in_word:
        # if this is not a vowel, add it to our output string
        if not is_vowel(character):
            out_word += "." + character
    
    print(out_word)


# Checks whether a character is a vowel
def is_vowel(character):
    vowel_list = ['a', 'e', 'i', 'o', 'u', 'y']
    
    # Check whether or not our character is a vowel
    if character in vowel_list:
        return True
    
    return False


if __name__ == "__main__":
    main()