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.*;
public class Main {
    public static void main(String[] args){
	Scanner scan = new Scanner(System.in);
	String s = scan.next();
	String m = "";
	for(int i=0;i<13;i++){
	    if(i==4)
		m+=" ";
	    else if(i<4)
		m+=String.valueOf(s.charAt(i));
	    else
		m+=String.valueOf(s.charAt(i-1));
	}
	System.out.println(m);
    }
}
