package pfRetake28Oct_2;

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

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

        while (true) {
            String input = reader.readLine();
            if (input.equals("wife is happy")) {
                break;
            }
            Pattern dishes = Pattern.compile("(<)([(0-9a-z)]+)(>)+");
            Pattern cleaning = Pattern.compile("(\\[)([(0-9A-Z)]+)(])+");
            Pattern someShit = Pattern.compile("[({)](.*)(})+");

            Matcher dishMatcher = dishes.matcher(input);
            Matcher cleanMatcher = cleaning.matcher(input);
            Matcher someShitMatch = someShit.matcher(input);
            if (dishMatcher.find()) {
                System.out.println(dishMatcher.group(2));
            }
            if (cleanMatcher.find()) {
                System.out.println(cleanMatcher.group(2));
            }
            if (someShitMatch.find()){
                System.out.println(someShitMatch.group(1));
            }

        }
    }
}