using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;
class Program
{
    static int NN => int.Parse(ReadLine());
    static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();
    static string[] SList(long n) => Enumerable.Repeat(0, (int)n).Select(_ => ReadLine()).ToArray();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var t = NN;
        var ans = new bool[t];
        for (var u = 0; u < t; ++u)
        {
            var n = NN;
            var s = ReadLine();
            ans[u] = Three(n, s);
        }
        WriteLine(string.Join("\n", ans.Select(f => f ? "Yes" : "No")));
    }
    static bool Three(int n, string s)
    {
        var c = s.ToList();
        c.Add(s[0]);
        c.Add(s[1]);
        for (var i = 0; i + 2 < c.Count; ++i)
        {
            if (c[i] == '0' && c[i + 1] == '0' && c[i + 2] == '?') c[i + 2] = '1';
            if (c[i] == '1' && c[i + 1] == '1' && c[i + 2] == '?') c[i + 2] = '0';
        }
        for (var i = c.Count - 3; i >= 0; --i)
        {
            if (c[i] == '?' && c[i + 1] == '0' && c[i + 2] == '0') c[i] = '1';
            if (c[i] == '?' && c[i + 1] == '1' && c[i + 2] == '1') c[i] = '0';
        }
        var len = 0;
        var last = 'a';
        for (var i = 0; i < c.Count; ++i)
        {
            if (c[i] != last || c[i] == '?')
            {
                len = 1;
                last = c[i];
            }
            else ++len;
            if (len == 3)
            {
                return false;
            }
        }
        return true;
    }
}