#include <bits/stdc++.h>
using namespace std;
const int N = 1e6;
void no() { cout << "NO" << endl, exit(0); }
bool try1(int a, int b, int c, int d) {
  int mn = min(a, b);
  a -= mn, b -= mn;
  mn = min(c, d);
  c -= mn, d -= mn;
  if (a == 0 && d == 0 && b == c && b >= 0 && c >= 0) return true;
  return false;
}
bool try2(int a, int b, int c, int d) {
  int mn = min(a, b);
  a -= mn, b -= mn;
  b--;
  mn = min(c, d);
  c -= mn, d -= mn;
  if (a == 0 && d == 0 && b == c && b >= 0 && c >= 0) return true;
  return false;
}
bool try3(int a, int b, int c, int d) {
  int mn = min(a, b);
  a -= mn, b -= mn;
  mn = min(c, d);
  c -= mn, d -= mn;
  c--;
  if (a == 0 && d == 0 && b == c && b >= 0 && c >= 0) return true;
  return false;
}
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  int a, b, c, d;
  cin >> a >> b >> c >> d;
  if (try1(a, b, c, d)) {
    cout << "YES\n";
    for (int i = 1; i <= a; i++) cout << " 0 1", b--;
    for (int i = 1; i <= b; i++) cout << " 2 1", c--;
    for (int i = 1; i <= d; i++) cout << " 2 3";
    cout << "\n";
    exit(0);
  }
  if (try2(a, b, c, d)) {
    cout << "YES\n";
    cout << 1;
    b--;
    for (int i = 1; i <= a; i++) cout << " 0 1", b--;
    for (int i = 1; i <= b; i++) cout << " 2 1", c--;
    for (int i = 1; i <= d; i++) cout << " 2 3";
    cout << "\n";
    exit(0);
  }
  if (try3(a, b, c, d)) {
    cout << "YES\n";
    for (int i = 1; i <= a; i++) cout << " 0 1", b--;
    for (int i = 1; i <= b; i++) cout << " 2 1", c--;
    for (int i = 1; i <= d; i++) cout << " 2 3";
    cout << " " << 2;
    cout << "\n";
    exit(0);
  }
  if (a + b + c + d == 1) {
    cout << "YES\n";
    if (a) cout << 0;
    if (b) cout << 1;
    if (c) cout << 2;
    if (d) cout << 3;
    cout << "\n";
    exit(0);
  }
  if (c == 0 && d == 0 && a == b + 1) {
    cout << "YES\n";
    cout << 0;
    for (int i = 1; i <= b; i++) cout << " 1 0";
    cout << "\n";
    exit(0);
  }
  if (a == 0 && b == 0 && c + 1 == d) {
    cout << "YES\n";
    cout << 3;
    for (int i = 1; i <= c; i++) cout << " 2 3";
    cout << "\n";
    exit(0);
  }
  cout << "NO\n";
  return 0;
}
