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.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;

public class Main {

    public static void main(String[] args) throws IOException {

        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        PrintWriter pr = new PrintWriter(System.out);
        StringBuilder sb = new StringBuilder();
        String X = br.readLine();
        for(int i=0;i<X.length();i++){
            if(i==4){
                sb.append(" ").append(X.charAt(i));
            }
            else{
                sb.append(X.charAt(i));
            }
        }
        
        pr.println(sb.toString());
        pr.close();
        
    }
    
}
