import java.util.Arrays;
import java.util.Scanner;

public class Sample001 {
	public static void main(String args[]) {

		Scanner sc = new Scanner(System.in);

		int N = sc.nextInt();
		boolean num[] = new boolean[10];

		Arrays.fill(num, true);


		for (int i = 0; i < N ; i++ ) {
			int A = sc.nextInt();
			int B = sc.nextInt();
			int C = sc.nextInt();
			int D = sc.nextInt();

			String jiro = sc.next();

			if(jiro.equals("YES")) {
				for(int j = 0; j < 10; j++) {
					if(j!=A&&j!=B&&j!=C&&j!=D)
						num[j] = false;
				}
			} else if(jiro.equals("NO")) {
				num[A] = false;
				num[B] = false;
				num[C] = false;
				num[D] = false;
			}

		}

		for(int i = 0; i < 10; i++) {
			if(num[i])
			System.out.println(i);

		}


	}
}