import java.io.*;
import gnu.regexp.*;

public class ExampleSubstitution {

    static void main(String[] args) throws gnu.regexp.REException,IOException
    {
	// standard input
	BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
	RE e = new RE("^(.*)bla(.*)$");
	String line;
	while((line = in.readLine()) != null) {
	    REMatch match;
	    if ((match=e.getMatch(line)) == null) {
		System.out.println(line);
	    } else {
		System.out.println(match.toString(1)+"ble"+match.toString(2));
	    }
	}
    }
}