This contest is `CODE FESTIVAL`. However, Mr. Takahashi always writes it `CODEFESTIVAL`, omitting the single space between `CODE` and `FESTIVAL`.

So he has decided to make a program that puts the single space he omitted.

You are given a string s with 12 letters. Output the string putting a single space between the first 4 letters and last 8 letters in the string s.

Constraints

* s contains exactly 12 letters.
* All letters in s are uppercase English letters.

Input

The input is given from Standard Input in the following format:


s


Output

Print the string putting a single space between the first 4 letters and last 8 letters in the string s. Put a line break at the end.

Examples

Input

CODEFESTIVAL


Output

CODE FESTIVAL


Input

POSTGRADUATE


Output

POST GRADUATE


Input

ABCDEFGHIJKL


Output

ABCD EFGHIJKL
import java.util.Scanner;

/**
 * Created by donamphuong on 25/09/2016.
 */
public class Main {
    public static void main(String[] args) {
        Scanner s = new Scanner(System.in);

        if(s.hasNext()) {
            String input = s.next();
            System.out.println(input.substring(0, 4) + " " + input.substring(4));
        }
    }
}
