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.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.io.Writer;
import java.util.*;



public class Main {
	 
	public static void main(String[] args) throws IOException{
		InputStream inputStream = System.in;
	    OutputStream outputStream = System.out;
	    InputReader in = new InputReader(inputStream);
	    OutputWriter out = new OutputWriter(outputStream);
	   
	    String s = in.next();
	    
	    out.printLine(s.substring(0, 4)+" "+s.substring(4));
	    
	    
	    out.close();
	     
	}
}

 
class InputReader {
	private InputStream stream;
	private byte[] buf = new byte[1024];
	private int curChar;
	private int numChars;
	
	public InputReader(InputStream stream) {
			this.stream = stream;
	}
	
	public int read(){
			if (numChars == -1)
			throw new InputMismatchException();
			if (curChar >= numChars) {
				curChar = 0;
				try {
					numChars = stream.read(buf);
				} catch (IOException e) {
					throw new InputMismatchException();
				}
				if (numChars <= 0)
					return -1;
			}
			return buf[curChar++];
	}
	public int readInt() {
		int c = read();
		while (isSpaceChar(c))
			c = read();
		int sgn = 1;
		if (c == '-') {
			sgn = -1;
			c = read();
		}
		int res = 0;
		do {
			if (c < '0' || c > '9')
				throw new InputMismatchException();
			res *= 10;
			res += c - '0';
			c = read();
		} while (!isSpaceChar(c));
		return res * sgn;
	}
	public long readLong() {
		int c = read();
		while(isSpaceChar(c))
			c = read();
	int sgn = 1;
	if (c == '-') {
		sgn = -1;
		c = read();
	}
	long res = 0;
	do {
		if (c < '0' || c > '9')
			throw new InputMismatchException();
		res *= 10;
		res += c - '0';
		c = read();
	} while (!isSpaceChar(c));
	return res * sgn;
	}
	public String readString() {
		int c = read();
		while (isSpaceChar(c))
			c = read();
		StringBuffer res = new StringBuffer();
		do {
			res.appendCodePoint(c);
			c = read();
		} while (!isSpaceChar(c));
		return res.toString();
	}
	public static boolean isSpaceChar(int c) {
		return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
	}
	public String next() {
		return readString();
	}
}
 
class OutputWriter {
	private final PrintWriter writer;
	public OutputWriter(OutputStream outputStream) {
		writer = new PrintWriter(outputStream);
	}
	public OutputWriter(Writer writer) {
		this.writer = new PrintWriter(writer);
	}
	public void print(Object... objects) {
		for (int i = 0; i < objects.length; i++) {
			if (i != 0)
				writer.print(' ');
			writer.print(objects[i]);
		}
	}
	public void printLine(Object... objects) {
		print(objects);
		writer.println();
	}
	public void close() {
	writer.close();
	}
}   
