#include<iostream>
#include<string>
#include<sstream>
using namespace std;
int main() {
	long i, n[1001] = { 0 }, n2[1001] = { 0 }, nn;
	string s;
	stringstream ss;
	while (getline(cin, s)) {
		if (s == "")
			break;
		ss.str("");
		ss << s;
		ss >> nn;
		n[nn]++;
	}
	while (getline(cin, s)) {
		if (s == "")
			break;
		ss.str("");
		ss << s;
		ss >> nn;
		n2[nn]++;
	}
	for (i = 1; i <= 1000; i++)
		if (n[i] * n2[i] > 0)
			cout << i << " " << n[i] + n2[i] << endl;
	return 0;
}