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 in = new Scanner(System.in);
        		
        		String[] s = in.next().split("");
        		String answer = "";
        		for (int x = 0; x < 4; x++){
        			answer += s[x];
        		}
        		answer += " ";
        		for (int x = 4; x < s.length; x++){
        			answer += s[x];
        		}
        		System.out.println(answer);
        		in.close();
        }
    }	