#include <bits/stdc++.h>
using namespace std;
int main() {
  int x1, x2, x3, x4, x5, x6, y1, y2, y3, y4, y5, y6;
  cin >> x1 >> y1 >> x2 >> y2;
  cin >> x3 >> y3 >> x4 >> y4;
  cin >> x5 >> y5 >> x6 >> y6;
  if (x3 <= x1 && x4 >= x2 && y3 <= y1 && y4 >= y2) {
    cout << "NO" << endl;
  } else if (x5 <= x1 && x6 >= x2 && y5 <= y1 && y6 >= y2) {
    cout << "NO" << endl;
  } else if (x3 <= x1 && x6 >= x2 && x4 >= x5 && y3 <= y1 && y5 <= y1 &&
             y4 >= y2 && y6 >= y2) {
    cout << "NO" << endl;
  } else if (x5 <= x1 && x4 >= x2 && x6 >= x3 && y5 <= y1 && y3 <= y1 &&
             y6 >= y2 && y4 >= y2) {
    cout << "NO" << endl;
  } else if (y3 <= y1 && y6 >= y2 && y4 >= y5 && x3 <= x1 && x5 <= x1 &&
             x4 >= x2 && x6 >= x2) {
    cout << "NO" << endl;
  } else if (y5 <= y1 && y4 >= y2 && y6 >= y3 && x5 <= x1 && x3 <= x1 &&
             x6 >= x2 && x4 >= x2) {
    cout << "NO" << endl;
  } else {
    cout << "YES" << endl;
  }
  return 0;
}
