import java.io.PrintWriter;
import java.util.Scanner;

public class Main {
	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		int t = sc.nextInt();
		PrintWriter pw = new PrintWriter(System.out);
		for (int z = 0; z < t; z++) {
			int n = sc.nextInt();
			char[] s = sc.next().toCharArray();

			boolean[] dp00 = new boolean[n + 2];
			boolean[] dp01 = new boolean[n + 2];
			boolean[] dp10 = new boolean[n + 2];
			boolean[] dp11 = new boolean[n + 2];
			if (s[0] != '1') {
				dp00[0] = true;
				dp10[0] = true;
			}
			if (s[0] != '0') {
				dp01[0] = true;
				dp11[0] = true;
			}

			if (s[1] != '1') {
				if (dp00[0] || dp10[0]) {
					dp00[1] = true;
				}
				if (dp01[0] || dp11[0]) {
					dp10[1] = true;
				}
			}
			if (s[1] != '0') {
				if (dp00[0] || dp10[0]) {
					dp01[1] = true;
				}
				if (dp01[0] || dp11[0]) {
					dp11[1] = true;
				}
			}

			for (int i = 2; i < n + 2; i++) {
				if (s[i % n] != '1') {
					if (dp10[i - 1]) {
						dp00[i] = true;
					}
					if (dp01[i - 1] || dp11[i - 1]) {
						dp10[i] = true;
					}
				}
				if (s[i % n] != '0') {
					if (dp00[i - 1] || dp10[i - 1]) {
						dp01[i] = true;
					}
					if (dp01[i - 1]) {
						dp11[i] = true;
					}
				}
			}

			if (dp00[n + 1] || dp01[n + 1] || dp10[n + 1] || dp11[n + 1]) {
				pw.println("Yes");
			} else {
				pw.println("No");
			}
		}
		pw.flush();
		sc.close();
	}
}