package StringAndTextProcessing.Lab;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class ExtractTags {
    public static void main(String[] args) throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

        String line = reader.readLine();

        Pattern open = Pattern.compile("(<!?\\w+.*?>)");
        Pattern close = Pattern.compile("(</\\w+.*>)");
        while (!line.equals("END")) {

            Matcher openMatcher = open.matcher(line);
            Matcher closeTags = close.matcher(line);
            if (!openMatcher.find() && !closeTags.find()) {
                return;
            }
            if (openMatcher.find()) {
                System.out.println(openMatcher.group());
            } else if (closeTags.find()) {
                System.out.println(closeTags.group());
            }
            line = reader.readLine();
        }

//        Matcher matcher = open.matcher(line);
//        Matcher closeTags = close.matcher(line);
//        if (!matcher.find()) {
//            return;
//        }


    }
}