#include <iostream>
using namespace std;
int main()
{
	int n,x,y;
	int i,j;
	cin >> n >> x >> y;
	for(i=1;i<=n;i++)
	{
        cout << "(" << x << "," << i << ") ";
		//printf("(%d,%d) ",x,i);
	}
	cout << endl;
	for(i=1;i<=n;i++)
	{
        cout << "(" << i << "," << y << ") ";
		//printf("(%d,%d) ",i,y);
	}
	cout << endl;
	for(i=1;i<=n;i++)
	{
		for(j=1;j<=n;j++)
		{
			if(i-j==x-y)
            cout << "(" << i << "," << j << ") ";
			//printf("(%d,%d) ",i,j);
	    }
	}
	cout <<endl;
	for(i=1;i<=n;i++)
	{
		for(j=1;j<=n;j++)
		{
			if(i+j==x+y)
            cout << "(" << j << "," << i << ") ";
			//printf("(%d,%d) ",j,i);
	    }
	}
	
    return 0;
}