#include <bits/stdc++.h>
using namespace std;
#define cin(v)        \
    for (auto &i : v) \
        cin >> i;
#define cout(v)       \
    for (auto &i : v) \
        cout << i << " ";
#define br cout << '\n';
#define ll long long
#define ull unsigned long long
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
#define MOD 1000000007
#define pi 3.14159265358979323846
#define Time cerr << "Time Taken: " << (float)clock() / CLOCKS_PER_SEC << " Secs" \
                  << "\n";

void Warding()
{
    ios_base::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr);
#ifndef ONLINE_JUDGE
    freopen("input.txt", "r", stdin), freopen("output.txt", "w", stdout);
#endif
}

vector<ll> v;

bool test_arthi(ll i)
{
    if (i < 0 or i >= v.size())
        return false;
    ll keep = v[i];
    if (i == 0)
        v[i] = v[i + 1] + (v[v.size() - 2] - v[v.size() - 1]);
    else if (i == v.size() - 1)
        v[i] = v[i - 1] + (v[1] - v[0]);
    else
        v[i] = (v[i + 1] + v[i - 1]) / 2;
    ll holder = v[1] - v[0];
    if (v[i] <= 0)
    {
        v[i] = keep;
        return false;
    }
    for (int j = 1; j < v.size(); j++)
    {
        if (v[j] - v[j - 1] != holder)
        {
            v[i] = keep;
            return false;
        }
    }
    v[i] = keep;
    return true;
}

void solve()
{
    bool flag = 0;
    ll n, found = 0;
    cin >> n;
    v.resize(n);
    cin(v);
    if (n <= 2)
    {
        cout << "YES" << '\n';
        return;
    }
    ll diff = v[1] - v[0];
    for (ll i = 1; i < n; i++)
    {
        if (v[i] - v[i - 1] != diff and !flag)
        {
            found = i;
            flag = true;
        }
    }
    if (flag)
    {
        for (ll i = 0; i < 3; i++)
        {
            bool test = test_arthi(found - i), test2 = test_arthi(found + i), test3 = test_arthi(i);
            if (test or test3 or (test2 and i != 0))
            {
                cout << "YES" << '\n';
                return;
            }
        }
    }
    else if (!flag)
    {
        cout << "YES" << '\n';
        return;
    }
    cout << "NO" << '\n';
}

int main()
{
    Warding();
    int t = 1;
    cin >> t;
    while (t--)
    {
        solve();
    }
    Time
}