#include <iostream>
using namespace std;

void solve()
{
    int a[10001] = {0}, N, n, X32 = 0, ret = 0;
    cin >> N;
    for (int i=0; i<N; ++i)
    {
        cin >> n;
        a[n]++;
    }

    for (int i=0; i<10001; ++i)
    {
        if (i >= 32)
            X32 -= a[i-32];
        if (a[i])
        {
            ret += a[i] * X32;
            ret += a[i] * (a[i]-1)/2;
            X32 += a[i];
        }
    }
    cout << ret << endl;
}

int main()
{
    int T;
    cin >> T;
    for (int i=0 ; i<T ; i++)
        solve();
}