#include <bits/stdc++.h>
using namespace std;
queue<pair<int, int> > q, tmp;
void init();
void process();
int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  init();
  process();
  cout.flush();
  return 0;
}
void init() {
  for (int i = 0; i < 4; i++) {
    int x;
    cin >> x;
    if (x > 0) {
      q.emplace(i, x);
    }
  }
  tmp = q;
}
void run(bool fs_first, bool &good, vector<int> &buff) {
  pair<int, int> fs = q.front(), fb;
  q.pop();
  while (!q.empty()) {
    if (fs.second == 0) {
      fs = q.front();
      q.pop();
    }
    if (q.empty()) break;
    fb = q.front();
    q.pop();
    if (fs.first != fb.first - 1) {
      good = false;
      break;
    }
    if (buff.empty()) {
      if (fs_first) {
        while (fb.second > 0 && fs.second > 0) {
          buff.push_back(fs.first);
          buff.push_back(fb.first);
          fb.second--, fs.second--;
        }
      } else {
        while (fb.second > 0 && fs.second > 0) {
          buff.push_back(fb.first);
          buff.push_back(fs.first);
          fb.second--, fs.second--;
        }
      }
    } else {
      if (buff.back() == fs.first) {
        while (fb.second > 0 && fs.second > 0) {
          buff.push_back(fb.first);
          buff.push_back(fs.first);
          fb.second--, fs.second--;
        }
      } else {
        while (fb.second > 0 && fs.second > 0) {
          buff.push_back(fs.first);
          buff.push_back(fb.first);
          fb.second--, fs.second--;
        }
      }
    }
    if (fs.second == 0) fs = fb;
  }
  if (!buff.empty() && fs.second > 0 &&
      (fs.first != buff.back() + 1 && fs.first != buff.back() - 1))
    good = false;
  if (good == false) return;
  if (fs.second == 0) return;
  if (fs.second == 1 && buff.back() != fs.first) {
    buff.push_back(fs.first);
    return;
  }
  good = false;
}
void process() {
  if (q.size() == 0) {
    cout << "NO" << '\n';
    return;
  }
  if (q.size() == 1) {
    pair<int, int> f = q.front();
    q.pop();
    if (f.second == 1) {
      cout << "YES" << '\n';
      cout << f.first << '\n';
      return;
    } else {
      cout << "NO" << '\n';
      return;
    }
  }
  bool good = true;
  vector<int> buff;
  run(true, good, buff);
  if (good == false) {
    good = true;
    buff.clear();
    q = tmp;
    run(false, good, buff);
  }
  if (good) {
    cout << "YES" << '\n';
    for (auto x : buff) cout << x << " ";
    cout << '\n';
  } else
    cout << "NO" << '\n';
}
