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 JAVA):

Solution:
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Prob118A {
	static BufferedReader in;
	static BufferedWriter out;

	public static String getS() throws IOException {
		return in.readLine();
	}

	public static int getInt() throws NumberFormatException, IOException {
		return Integer.parseInt(getS());
	}

	public static String[] getSArray() throws IOException {
		return getS().split(" ");
	}

	public static int[] getIntArray() throws IOException {
		String[] str = getSArray();
		int[] arr = new int[str.length];
		for (int i = 0; i < str.length; i++) {
			arr[i] = Integer.parseInt(str[i]);
		}
		return arr;
	}
	
	public static boolean checkVowel(char a){
		a = Character.toLowerCase(a);
		if(a == 'a'||a=='y'||a=='e'||a=='i'||a=='o'||a=='u'){
			return true;
		}
		return false;
	}

	public static void main(String[] args) throws NumberFormatException, IOException {
		in = new BufferedReader(new InputStreamReader(System.in));
		out = new BufferedWriter(new OutputStreamWriter(System.out));
		StringBuilder builder = new StringBuilder();
		String str = getS();
		int i=0;
		while(i<str.length()){
			if(checkVowel(str.charAt(i))){
				i++;
			}else{
				builder.append('.');
				builder.append(Character.toLowerCase(str.charAt(i)));
				i++;
			}
		}
		out.write(builder.toString());
		out.flush();
	}
}