#include <bits/stdc++.h>

using namespace std;

namespace std {

template <class T1, class T2>
istream& operator>>(istream& is, pair<T1, T2>& p) {
  return is >> p.first >> p.second;
}

template <class... Ts>
istream& operator>>(istream& is, tuple<Ts...>& t) {
  return apply([&is](auto&... xs) -> istream& { return (is >> ... >> xs); }, t);
}

template <class... Ts>
istream& operator>>(istream& is, tuple<Ts&...>&& t) {
  return is >> t;
}

template <class R, enable_if_t<!is_convertible_v<R, string>>* = nullptr>
auto operator>>(istream& is, R&& r) -> decltype(is >> *begin(r)) {
  for (auto&& e : r) {
    is >> e;
  }
  return is;
}

template <class T1, class T2>
ostream& operator<<(ostream& os, const pair<T1, T2>& p) {
  return os << p.first << ' ' << p.second;
}

template <class... Ts>
ostream& operator<<(ostream& os, const tuple<Ts...>& t) {
  auto f = [&os](const auto&... xs) -> ostream& {
    [[maybe_unused]] auto sep = "";
    ((os << exchange(sep, " ") << xs), ...);
    return os;
  };
  return apply(f, t);
}

template <class R, enable_if_t<!is_convertible_v<R, string_view>>* = nullptr>
auto operator<<(ostream& os, R&& r) -> decltype(os << *begin(r)) {
  auto sep = "";
  for (auto&& e : r) {
    os << exchange(sep, " ") << e;
  }
  return os;
}

}  // namespace std

// end library

#define show(...) static_cast<void>(0)

namespace std::ranges::views {

namespace {

void solve() {
  int n;
  cin >> n;
  vector<int> a(n);
  cin >> a;
  int f = 1 << a[0];
  for (int e : a | drop(1)) {
    int nf = 0;
    if (e) {
      if (f & 1) {
        nf |= 8;
      }
      if (f & 2) {
        nf |= 2;
      }
      if (f & 4) {
        nf |= 2;
      }
      if (f & 8) {
        nf |= 2;
        nf |= 8;
      }
    } else {
      if (f & 1) {
        nf |= 1;
      }
      if (f & 2) {
        nf |= 4;
      }
      if (f & 4) {
        nf |= 1;
        nf |= 4;
      }
      if (f & 8) {
        nf |= 1;
      }
    }
    f = nf;
    show(f);
  }
  cout << (f & 12 ? "Yes\n" : "No\n");
}

}  // namespace

}  // namespace std::ranges::views

using views::solve;

int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  int t;
  cin >> t;
  while (t--) {
    solve();
  }
}