#include<bits/stdc++.h>
using namespace std;
string a[100005]; 
int main()
{
	ios::sync_with_stdio(0);
	cin.tie(0);
	int t;
	cin>>t;
    getchar();
	for(int i=1;i<=t;++i)
	{
		int n,s=1;
		cin>>n;
		getchar();
		for(int j=1;j<=n+1;++j)
		{
			getline(cin,a[j]);
		}
		sort(a+1,a+n+2);
		for(int j=2;j<=n;++j)
		{
			if(a[j]==a[j-1])
			{
				++s;
			}
			else
			{
				cout<<a[j-1]<<" "<<s<<"\n";
			}
		}
		cout<<a[n+1]<<" "<<s<<"\n";
	}
 	return 0;
}