#line 1 "main.cpp"
#include <iostream>
#include <algorithm>
#include <vector>

using namespace std;

bool judge(int a, int b, int c) {
    if (a == c) return false;
    return (a < b && b > c) ||
           (a > b && b < c);
}

bool judge_all(const vector<int>& xs) {
    int n = xs.size();
    for (int i = 0; i + 2 < n; ++i) {
        if (!judge(xs[i], xs[i + 1], xs[i + 2])) return false;
    }
    return true;
}

void solve() {
    int n;
    cin >> n;

    vector<int> xs(n);
    for (auto& x : xs) cin >> x;

    vector<int> is, bs;
    for (int i = 0; i + 2 < n; ++i) {
        if (judge(xs[i], xs[i + 1], xs[i + 2])) continue;
        bs.push_back(i);
        for (int j = 0; j < 3; ++j) is.push_back(i + j);
    }

    sort(is.begin(), is.end());
    is.erase(unique(is.begin(), is.end()), is.end());

    if (is.size() > 10) {
        cout << "No\n";
        return;
    }

    auto around = [&](int i) {
        return i < 0 || n <= i + 2 ||
               judge(xs[i], xs[i + 1], xs[i + 2]);
    };

    for (auto i : is) {
        for (int d = 0; d < 3; ++d) bs.push_back(i - d);

        for (int j = 0; j < n; ++j) {
            if (i == j) continue;

            swap(xs[i], xs[j]);
            for (int d = 0; d < 3; ++d) bs.push_back(j - d);

            bool ok = true;
            for (auto b : bs) {
                if (!around(b)) ok = false;
            }
            if (ok) {
                cout << "Yes\n";
                return;
            }

            swap(xs[i], xs[j]);
            for (int d = 0; d < 3; ++d) bs.pop_back();
        }
        for (int d = 0; d < 3; ++d) bs.pop_back();
    }

    cout << "No\n";
}

int main() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);

    int q;
    cin >> q;
    while (q--) solve();

    return 0;
}