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