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.*;

class Main{
	public static void main(String[] args)throws IOException{
		InputStreamReader isr = new InputStreamReader(System.in);
		BufferedReader br = new BufferedReader(isr);
		String str;
		str = br.readLine();
		for(int i=0;i<str.length(); i++){
			System.out.print(str.charAt(i));
			if(i==3){
				System.out.print(" ");
			}
		}
		System.out.println();
	}
}