#include <bits/stdc++.h>
#define syosu(x) fixed<<setprecision(x)
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> P;
typedef pair<double,double> pdd;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<double> vd;
typedef vector<vd> vvd;
typedef vector<ll> vl;
typedef vector<vl> vvl;
typedef vector<string> vs;
typedef vector<P> vp;
typedef vector<vp> vvp;
typedef vector<pll> vpll;
typedef pair<int,P> pip;
typedef vector<pip> vip;
const int inf=1<<30;
const ll INF=1ll<<60;
const double pi=acos(-1);
const double eps=1e-8;
const ll mod=1e9+7;
const int dx[4]={-1,0,1,0},dy[4]={0,-1,0,1};

int q,n;

int main(){
	cin>>q;
	for(int i=0;i<q;i++){
		int n;
		cin>>n;
		map<int,int> m;
		for(int j=0;j<n;j++){
			int A;
			cin>>A;
			m[A]++;
		}
		vi a;
		for(auto j=m.begin();j!=m.end();j++) a.push_back(j->second);
		int res=0;
		while(a.size()>2){
			sort(a.rbegin(),a.rend());
			if(a[0]&&a[1]&&a[2]){
				a[0]--;a[1]--;a[2]--;
				res++;
			}
			else break;
		}
		cout<<res<<endl;
	}
}