#include <bits/stdc++.h>
using namespace std;
void solve() {
  long long i, j, flag = 0;
  pair<long long, long long> a, b, c, d, e, f;
  cin >> a.first >> a.second;
  cin >> b.first >> b.second;
  cin >> c.first >> c.second;
  d.first = b.first + c.first - a.first;
  d.second = b.second + c.second - a.second;
  e.first = a.first + c.first - b.first;
  e.second = a.second + c.second - b.second;
  f.first = a.first + b.first - c.first;
  f.second = a.second + b.second - c.second;
  cout << "3\n";
  cout << d.first << " " << d.second << endl;
  cout << e.first << " " << e.second << endl;
  cout << f.first << " " << f.second << endl;
}
int main() {
  ios_base::sync_with_stdio(false), cin.tie(0), cout.tie(0);
  long long t = 1;
  while (t--) {
    solve();
  }
  return 0;
}
