#include<iostream>
#include<cmath>
#include<iomanip>
#include<algorithm>
#include<cstdlib>
#include<cstring>
#include<vector>
#include<utility>

#define ll long long
#define sz(x) int(x.size())
#define all(x) x.begin(),x.end()
using namespace std;

void Fast_IO(){
    ios_base::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr);
    #ifndef ONLINE_JUDGE
        freopen("input.txt", "r", stdin), freopen("output.txt", "w", stdout);
    #endif
}





void solve(){

 vector<pair<int, int>> p(3);
    for (int i = 0; i < 3; i++)
    {
        cin >> p[i].first >> p[i].second;
    }
    sort(all(p));

    cout << 3 << endl;
    cout << p[0].first << ' ' << p[0].second << ' ' << p[1].first << ' ' << p[0].second << '\n';
    cout << p[2].first << ' ' << p[2].second << ' ' << p[1].first << ' ' << p[2].second << '\n';
    cout << p[1].first << ' ' << max({p[0].second, p[1].second, p[2].second}) << ' ' << p[1].first << ' '<< min({p[0].second, p[1].second, p[2].second}) << '\n';
}

int main(){
    Fast_IO();
int t =1;
// cin>>t;
while(t--){
solve();
}
return 0;
}