#include <bits/stdc++.h>
using namespace std;
struct point {
  long long x, y;
  point() { x = y = 0; }
  point(long long _x, long long _y) : x(_x), y(_y) {}
};
int main() {
  cin.tie(0);
  ios_base::sync_with_stdio(0);
  point p, q, s;
  cin >> p.x >> p.y >> q.x >> q.y >> s.x >> s.y;
  cout << 3 << endl;
  cout << s.x - p.x + q.x << " " << s.y - p.y + q.y << endl;
  cout << p.x - s.x + q.x << " " << p.y - s.y + q.y << endl;
  cout << s.x - q.x + p.x << " " << s.y - q.y + p.y << endl;
}
