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.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.text.NumberFormat;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Scanner;

public class Main {
	

	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
		BufferedReader inReader = new BufferedReader(new InputStreamReader(System.in));
		BufferedWriter outWriter = new BufferedWriter(new OutputStreamWriter(System.out));
		String finalOutput = "";
		String line;
		int count = 0;
		int sum = 0;
		line = inReader.readLine();
		char[] tmp = line.toCharArray();
		
		finalOutput += tmp[0];
		finalOutput += tmp[1];

		finalOutput += tmp[2];
		finalOutput += tmp[3];

		finalOutput += " ";
		for(int i = 4; i < tmp.length; i ++)
			finalOutput += tmp[i];
		System.out.println(finalOutput);
}
}