import java.io.IOException;
import java.util.Scanner;

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

int cases = sc.nextInt() * 2;
    int count = 0;
    String result ="";

    String compare_name = ""; 
    String plag = ""; 
    String last_plag = "";
    while (cases-- > 0) {
        count++;
        String name = sc.next();
        last_plag = "Y";
        if (count == 2) {
            count = 0;

            for (int i = 0; i < name.length(); i++) {
                plag = "N";

                for (int j = 0; j < compare_name.length(); j++) {
                    if (name.charAt(i) == compare_name.charAt(j)) {
                        plag = "Y";
                    }
                }
                if (plag == "N" || name.equals(compare_name)) {
                    last_plag = "N";
                }
            }


            if (last_plag == "N") {
                result += "No\n";

            }
            if (last_plag == "Y") {
                result += "Yes\n";
            }

        } else {
            compare_name = name;
        }
    }
    System.out.println(result);
}

}