/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String code=".... . -.--   .--- ..- -.. ."; //Decodes to "HEY JUDE"
		Iterator<String> letters = Arrays.asList(code.split(" ")).iterator();
		StringBuilder res = new StringBuilder();
		while(letters.hasNext()) {
		    String current = letters.next();
		    if (! "".equals(current)) { // we have a letter
		        res.append("x");
		    } else { // we have an empty string
		        res.append(" ");
		        letters.next(); // we skip the next item which will be an empty string
		    }
		}
		System.out.println(res);
	}
}

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