#include <iostream>
#include <algorithm>
#include <cstdlib>
#include <ctime>
#include <vector>
#include <set>
#include <string>
#include <map>
#include <queue>
#include <stack>
#include <cstring>
#include <cstdio>
#include <cmath>
#include <deque>
#define clr(a,b) memset(a,b,sizeof(a))
#define ll long long

using namespace std;

const int maxn=1e2+10;
int t,n,maxi;
string s;
map<string,int>mp;

int main()
{
	cin>>t;
	while(t--)
	{
		maxi=0,mp.clear();
		cin>>n;
		while(n--)
		{
			cin>>s;
			mp[s]++;
			maxi=max(maxi,mp[s]);
		}
		cout<<maxi<<endl;
	}
}