#include "bits/stdc++.h"
using namespace std;
#define ll long long int
#define rep(i,n) for( int i = 0; i < n; i++ )
#define rrep(i,n) for( int i = n; i >= 0; i-- )
#define REP(i,s,t) for( int i = s; i <= t; i++ )
#define RREP(i,s,t) for( int i = s; i >= t; i-- )
#define dump(x)  cerr << #x << " = " << (x) << endl;
#define INF 2000000000
#define mod 1000000007
#define INF2 1000000000000000000


int main(void)
{
    cin.tie(0);
    ios::sync_with_stdio(false);
	int T; cin >> T;
	rep(i, T) {
		int ans = 0;
		int N; cin >> N;
		int L[101];
		rep(j, N) cin >> L[j];
		set<int> st;
		rep(j, N) st.insert(L[j]);
		map<int, int> mp;
		rep(j, N) mp[L[j]]++;
		int cnt[1010] = {};
		int tmp = 0;
		for (auto j = st.begin(); j != st.end(); j++) {
			cnt[tmp++] = mp[*j];
		}
		sort(cnt, cnt + 1010, greater<int> ());
		while (cnt[2] > 0) {
			ans++;
			cnt[0]--;
			cnt[1]--;
			cnt[2]--;
			sort(cnt, cnt + 1010, greater<int>());
		}
		cout << ans << endl;
	}


    return 0;
}