#include <iostream>
#include <fstream>
using namespace std;
ifstream ka("perle.in");
ofstream ki("perle.out");
int n, a[10005], s;

bool sir(int &s, int litera)
{
    if(litera == 1)
    {
        s++;
    }
    else if(litera == 2)
    {
        if(a[s] == 2)
        {
            s++;
            return sir(s, 2);
        }
        else if(a[s] == 1 && a[s+2] == 3)
            {
                s += 4;
                return sir(s, 3);
            }
        else
            return false;
    }
    else if(litera == 3)
    {
        if(a[s] == 2)
        {
            s++;
        }
        if(a[s] == 3)
        {
            s++;
            return sir(s, 2) && sir(s, 3);
        }
        if(a[s] == 1 && a[s+1] == 2)
        {
            s += 2;
            return sir(s, 1);
        }
    }
    if(s == a[0] + 1)
        return true;
    else
        return false;
}

bool start()
{
   bool a = sir(s, 1);
   s = 1;
   a = a || sir(s, 2);
   s = 1;
   a = a || sir(s, 3);
   return a;
}

int main()
{
    ka >> n;
    for(int i = 1; i <= n; i++)
    {
        ka >> a[0];
        for(int j = 1; j <= a[0]; j++)
            ka >> a[j];
        s = 1;
        ki << start() << '\n';
    }
}