#include<bits/stdc++.h>
using namespace std;

int main(){
	int n, a, b;
	cin >> n >> a >> b;
	for (int i = 1; i <= n; i++){
		printf("(%d,%d) ", a, i);
	}
	cout << endl;
	for (int i = 1; i <= n; i++){
		printf("(%d,%d) ", i, b);
	}
	cout << endl;
	for (int i = 1, j = i+1; j <= n; i++,j++){
		printf("(%d,%d) ", i, j);
	}
	cout << endl;
	int x = a+b;
	for (int i = n; i >= 1; i--){
		int j = x-i;
		printf("(%d,%d) ", i, j);
	}
	return 0;
}