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;

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc = new Scanner(System.in);
		String str = sc.next();

        char[] str_a = str.toCharArray();
        char[] str_1 = new char[4];
        char[] str_2 = new char[str.length()-4];
        for (int i=0;i<4;i++){
        	str_1[i] = str_a[i];
        }
        for (int i=4;i<str_a.length;i++){
        	str_2[i-4] = str_a[i];
        }
        String a = new String(str_1);
        String b = new String(str_2);
        String c = a+' '+b+'\n';
        System.out.println(a+" "+b);
	}

}