#include <bits/stdc++.h>
using namespace std;
vector<int> ans;
void solve() {
  long long int i, a, b, c, d, n;
  cin >> a >> b >> c >> d;
  n = a + b + c + d;
  string s = "";
  while (a > 0) {
    s += '0';
    a--;
  }
  while (c > 0) {
    s += '2';
    c--;
  }
  i = 0;
  while (b > 0 && i < s.length()) {
    if (s[i] == '0') {
      s.insert(i + 1, 1, '1');
      b--;
    } else {
      break;
    }
    i = i + 2;
  }
  while (d > 0 && i < s.length()) {
    if (s[i] == '2') {
      s.insert(i + 1, 1, '3');
      d--;
    }
    i = i + 2;
  }
  while (b > 0 && i < s.length()) {
    if (s[i] == '2') {
      s.insert(i + 1, 1, '1');
      b--;
    }
    i = i + 2;
  }
  if (d > 0 && s[0] == '2') {
    s.insert(0, 1, '3');
    d--;
  }
  if (b > 0 && (s[0] == '0' || s[0] == '2')) {
    s.insert(0, 1, '1');
    b--;
  }
  if (b > 0 && (s[s.length() - 1] == '0' || s[s.length() - 1] == '2')) {
    s.insert(s.length() - 1, 1, '1');
    b--;
  }
  while (b > 0) {
    s += '1';
    b--;
  }
  while (d > 0) {
    s += '3';
    d--;
  }
  for (i = 1; i < n; i++) {
    if (abs(s[i] - s[i - 1]) != 1) {
      cout << "NO";
      return;
    }
  }
  cout << "YES\n";
  for (i = 0; i < n; i++) cout << s[i] << " ";
}
int main() {
  long long int t;
  t = 1;
  while (t--) {
    solve();
    cout << "\n";
  }
}
