#include <bits/stdc++.h>
using namespace std;
map<pair<int, int>, bool> MP;
map<pair<int, int>, bool>::iterator it;
const int NMAX = 1000;
int main() {
  ios_base::sync_with_stdio(false);
  ios::sync_with_stdio(false);
  int a, b, x, y, n, m;
  cin >> a >> b >> n >> m >> x >> y;
  cout << "3\n";
  int dx = a - n, dy = b - m;
  cout << x + dx << ' ' << y + dy << '\n';
  cout << x - dx << ' ' << y - dy << '\n';
  dx = x - n;
  dy = y - m;
  cout << a - dx << ' ' << b - dy << '\n';
  return 0;
}
