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.*;

 
class Main {
 
    private static Scanner sc = new Scanner(System.in);
 
    public static void main(String[] args) {
        String s = sc.next();
        char[] c = s.toCharArray();
        String s2="";
        for(int i=0;i<4;i++) {
            s2+=c[i];
        }
        s2+=" ";
        for(int i=4;i<c.length;i++){
        	s2+=c[i];
        }
        //String s = String.valueOf(i);
        //int i = Integer.parseInt(s);
        System.out.println(s2);

    }
}

