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

//#define int long long

typedef pair<int,int>pint;
typedef vector<int>vint;
typedef vector<pint>vpint;
#define endl '\n'
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define all(v) (v).begin(),(v).end()
#define rep(i,n) for(int i=0;i<(n);i++)
#define reps(i,f,n) for(int i=(f);i<(n);i++)
#define each(it,v) for(__typeof((v).begin()) it=(v).begin();it!=(v).end();it++)
template<class T,class U>void chmin(T &t,U f){if(t>f)t=f;}
template<class T,class U>void chmax(T &t,U f){if(t<f)t=f;}

void solve(){
    int n;vint a;
    cin>>n;a.resize(n);
    rep(i,n)cin>>a[i];

    vint hs;
    rep(i,n)hs.pb(a[i]);
    sort(all(hs));
    hs.erase(unique(all(hs)),hs.end());
    rep(i,n)a[i]=lower_bound(all(hs),a[i])-hs.begin();

    int cnt[100]={};
    rep(i,n)cnt[a[i]]++;

    int ans=0;
    while(true){
        int tmp=0;
        for(int i=0;i<n&&tmp<3;i++){
            if(cnt[i]){
                cnt[i]--;
                tmp++;
            }
        }
        if(tmp!=3)break;
        ans++;
    }
    cout<<ans<<endl;
}

int main(){
    cin.tie();
    ios_base::sync_with_stdio(0);

    int T;cin>>T;
    while(T--)solve();
}