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

public class Main{
	
	
	public static void main(String args[])throws Exception{
		
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		Boolean[] Yes = new Boolean[10];
		
		Arrays.fill(Yes, 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 E = sc.next();
			if(E.equals("YES")){
				for(int j=0;j<10;j++){
					if(j!=A&&j!=B&&j!=C&&j!=D){
						Yes[j] = false;
					}
				}
			}else{
				Yes[A] = false;
				Yes[B] = false;
				Yes[C] = false;
				Yes[D] = false;
			}
		}
		
		for(int i=0;i<10;i++){
			if(Yes[i]){
				System.out.println(i);
			}
		}
	}
	
}