import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.stream.Stream;

public class Main {

    public static void main(String[] args) {
        final String pattern;
        pattern = (args.length > 0) ? args[0] : "abu";
        try (Stream<String> lines = new BufferedReader(new InputStreamReader(System.in)).lines()) {
            lines.filter(s -> s.contains(pattern)).forEach(System.out::println);
        }
    }
}