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

void ng() { cout << -1 << endl; }

int a, b, c, d;
bool is_swap = false;

int main() {
	cin >> a >> b >> c >> d;
	if (a > b) { swap(a, b); is_swap = true; }
	
	if (c == a) {
		if (a == b || b - 1 > d) { ng(); return 0; }
		for (int i = 0; i < a - 1; i++) { cout << is_swap << " " << 2 + i << endl; }
		cout << !is_swap << " " << is_swap << endl;
		for (int i = 0; i < b - a - 1; i++) { cout << (!is_swap) << " " << a + 1 + i << endl; }
		return 0;
	}
	
	if (a + b - 2 > d) { ng(); return 0; }
	for (int i = 0; i < a - 1; i++) { cout << is_swap << " " << 2 + i << endl; }
	for (int i = 0; i < b - 1; i++) { cout << (!is_swap) << " " << a + 1 + i - c << endl; }
	return 0;
}