#include <iostream>
#include <vector>
#include <fstream>
using namespace std;


int main() {
	int n;
	cin >> n;
	vector<string> cadouri;
	vector<string> persoane;

	string cadou;
	for (int i = 1; i <= n; i++) {
		cin >> cadou;
		cadouri.push_back(cadou);
	}

	string persoana;
	while (cin >> persoana) {
		persoane.push_back(persoana);
	}

	for (size_t i = 0; i < persoane.size(); i++) {

		cout << persoane[i] << ": ";

		int coeficient = 0;
		bool ok = true;
		while (ok) {
			if (i + coeficient < cadouri.size()) {
				cout << cadouri[i + coeficient] << " ";
				coeficient+=persoane.size();
			}
			else {
				cout << endl;
				ok = false;
			}
		}
	}


	return 0;
}