import java.util.Scanner;

public class Main {
	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		String s = sc.next();

		System.out.println("? " + s + s);
		while (true) {
			String s0 = sc.next();
			String s1 = sc.next();
			if (s0.equals("!")) {
				break;
			}
			System.out.println("? " + s1.charAt(1) + s);
		}
		sc.close();
	}
}