#include <bits/stdc++.h>
using namespace std;
int main() {
  int x1, y1, x2, y2, x3, y3, x4, y4, x5, y5, x6, y6;
  cin >> x1 >> y1;
  cin >> x2 >> y2;
  cin >> x3 >> y3;
  int ile = 3;
  x4 = x1 - x2 + x3;
  y4 = y1 - y2 + y3;
  x5 = x1 + x2 - x3;
  y5 = y1 + y2 - y3;
  x6 = x2 + x3 - x1;
  y6 = y2 + y3 - y1;
  cout << ile << endl;
  cout << x4 << " " << y4 << endl;
  cout << x5 << " " << y5 << endl;
  cout << x6 << " " << y6 << endl;
  return 0;
}
