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) {

		int o,p,q;
		int a = 0, b = 0;
		
		Scanner sc  = new Scanner(System.in);
//		int[] test  = new int[100000];
//  		int[] test2 = new int[1000];
	  String str1 = sc.next();
	//  String str2 = sc.next();
	for(int i=0; i < str1.length(); i++){
		
		if(i==4)System.out.print(" ");
		
		System.out.print(str1.charAt(i));
		
	
	}
	  
	 /*   
	  int	s = Integer.parseInt(sc.next());
	  int	t = Integer.parseInt(sc.next());
	  int	u = Integer.parseInt(sc.next());
		*/

		
   /*
      int d = 0;
    　　　　while(true){
		
       int	v = Integer.parseInt(sc.next());
       test2[d] = v ;
     	d++;
		}
		
		*/
/*
	  for(int i=0;i<c1.length;i++){
			if(c1[i]!=c2[i]){
				System.out.println("NO");
				return;
			}
		}
		*/

		  System.out.println();
	}
}