import java.util.*;
import java.util.regex.*;
import java.lang.*;
import java.io.*;

class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		 String str = "boy girl loop for get out boy girl left right";
		 Matcher m = Pattern.compile("\\b(girl)\\b|\\b(boy)\\b").matcher(str);
		 System.out.println( m.replaceAll(r -> r.group(2) != null ? "girl" : "boy") );
	}
}