#include <bits/stdc++.h>
#define FOR(i,a,b) for(int i = (a); i < (b); ++i)
#define REP(i,n) FOR(i,0,n)
#define RREP(i,n) for(int i = (n) - 1; (i) >= 0; --i)
#define SZ(n) (int)(n).size()
#define ALL(n) (n).begin(), (n).end()
#define MOD LL(1e9 + 7)
#define INF 100000000
using namespace std;
typedef long long LL;
typedef vector<int> VI;
typedef pair<int, int> PI;


int main() {
	int t;
	cin >> t;
	vector<LL> ans;
	while (t--) {
		int n;
		cin >> n;
		map<int, int> mp;
		REP(i, n) {
			int l;
			cin >> l;
			mp[l]++;
		}
		VI v;
		int res = 0;
		for(auto e : mp) {
			v.push_back(e.second);
		}
		while (1) {
			sort(ALL(v));
			reverse(ALL(v));
			if (v.size() >= 3 && v[0] > 0 && v[1] > 0 && v[2] > 0) {
				v[0]--; v[1]--; v[2]--;
				res++;
			}
			else {
				break;
			}
		}
		ans.push_back(res);
	}
	for (int e : ans) cout << e << endl;
	return 0;
}