#include<iostream>
#include<stdio.h>
#include<math.h>
#include<iomanip>
using namespace std;

int main()
{
	int n;
	int i, j;
	cin >> n >> i >> j;
	for (int p = 0; p < n; p++)
	{
		if (p == i)
		{
			for (int q = 0; q < n; q++)
			{
				cout << "(" << i<< "," <<q+1<< ")" << " ";
			}
		}
	}
	cout << "\n";
	for (int p = 0; p < n; p++)
	{
		if (p == i)
		{
			for (int q = 0; q < n; q++)
			{
				cout << "(" << q+1 << "," << i+1 << ")"<<" ";
			}
		}
	}
	cout << "\n";
	int q = i, p = j;
	while (q > 1 && p > 1)
	{
		q--;
		p--;
	}
	while (q<=i && p<=j)
	{
		cout<< "(" << q<< "," << p << ")"<<" ";
		q++;
		p++;
	}
	q = i, p = j;
	while (q+1<=n  && p+1<=n)
	{
		q++;
		p++;
		cout << "(" << q << "," << p << ")" << " ";
	}
	cout << "\n";
	q = i, p = j;
	while (q > 1 && p > 1)
	{
		q++;
		p--;
	}
	while (q >=i && p <= j)
	{
		cout << "(" << q << "," << p << ")" << " ";
		q--;
		p++;
	}

	q = i-1, p = j+1;
	while (q>0 && p <= n)
	{
		cout << "(" << q << "," << p << ")" << " ";
		q--;
		p++;
	}
	return 0;
}