#include <iostream>
#include <cstdlib>
using namespace std;

int main()
{
	for (int i = 0; i < 3; ++i) {
		for (int j = 0; j < 3; ++j) {
			cout << i << ", " << j << "\n";
		}

		for (int j = 0; j < 3; ++j) {
			cout << i << ", " << j << "\n";
		}
	}

	for (int i = 0; i < 3; ++i) {
		for (int j = 0; j < 3; ++j) {
			cout << i << ", " << j << "\n";
		}
	}

	return EXIT_SUCCESS;
}