#include <bits/stdc++.h>
using namespace std;

#define int long long
#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define repi(i,a,b) for(int i=(int)(a);i<(int)(b);i++)
#define all(x) (x).begin(),(x).end()
#define pb push_back
#define mp make_pair
#define mt make_tuple

typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<vi> vvi;

const int inf = 1LL<<60;
const int mod = 1e9 + 7;
const double eps = 1e-9;

/*{
}*/

signed main()
{
  int t;
  cin >> t;

  while(t--){
    int n;
    cin >> n;

    vi L(n);
    map<int, int> cnt;
    rep(i, n){
      cin >> L[i];
      cnt[L[i]]++;
    }

    int ans = 0;
    vi t(3, -1);
    for(auto c : cnt){

      if(t[0] == -1) t[0] = c.second;
      else if(t[1] == -1) t[1] = c.second;
      else{
        t[2] = c.second;
        sort(all(t));
        ans += t[0];
        t[1] -= t[0];
        t[2] -= t[0];
        swap(t[0], t[1]);
        swap(t[1], t[2]);
      }
    }

    cout << ans << endl;
  }

  return 0;
}