#include <bits/stdc++.h>
using namespace std;
long long power(long long b, long long e, long long m) {
  if (e == 0) return 1;
  if (e & 1) return b * power(b * b % m, e / 2, m) % m;
  return power(b * b % m, e / 2, m);
}
long long power(long long b, long long e) {
  if (e == 0) return 1;
  if (e & 1) return b * power(b * b, e / 2);
  return power(b * b, e / 2);
}
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  int a, b, c, d;
  cin >> a >> b >> c >> d;
  int f = 0;
  if (b == a && a == 0) {
    if (c == d) {
      cout << "YES"
           << "\n";
      for (int i = 0; i < c; i++) cout << "2 3 ";
      return 0;
    } else if ((d + 1) == c) {
      cout << "YES"
           << "\n";
      for (int i = 0; i < d; i++) cout << "2 3 ";
      cout << "2";
      return 0;
    } else if (d == (c + 1)) {
      cout << "YES"
           << "\n";
      for (int i = 0; i < c; i++) cout << "3 2 ";
      cout << "3";
      return 0;
    }
    cout << "NO";
    return 0;
  }
  if (c == 0 && c == d) {
    d = a;
    c = b;
    if (c == d) {
      cout << "YES"
           << "\n";
      for (int i = 0; i < c; i++) cout << "1 0 ";
      return 0;
    } else if ((d + 1) == c) {
      cout << "YES"
           << "\n";
      for (int i = 0; i < d; i++) cout << "1 0 ";
      cout << "1";
      return 0;
    } else if (d == (c + 1)) {
      cout << "YES"
           << "\n";
      for (int i = 0; i < c; i++) cout << "0 1 ";
      cout << "0";
      return 0;
    }
    cout << "NO";
    return 0;
  }
  if (b < a || c < d) {
    cout << "NO";
    return 0;
  }
  if (b == a) {
    if (c == d) {
      f = 1;
    } else {
      if ((c - d - 1) == (b - a)) f = 2;
    }
  } else {
    if (c == d) {
      if ((b - a - 1) == 0) f = 3;
    } else {
      if ((b - a) == (c - d)) f = 4;
      if ((b - a - 1) == (c - d)) f = 5;
      if ((b - a) == (c - d - 1)) f = 6;
    }
  }
  if (f == 0) {
    cout << "NO";
    return 0;
  } else if (f == 1) {
    cout << "YES"
         << "\n";
    for (int i = 1; i <= a; i++) cout << "0 1 ";
    for (int i = 1; i <= d; i++) cout << "2 3 ";
  } else if (f == 2) {
    cout << "YES"
         << "\n";
    for (int i = 1; i <= a; i++) cout << "0 1 ";
    for (int i = 1; i <= d; i++) cout << "2 3 ";
    cout << "2";
  } else if (f == 3) {
    cout << "YES"
         << "\n";
    cout << "1 ";
    for (int i = 1; i <= a; i++) cout << "0 1 ";
    for (int i = 1; i <= d; i++) cout << "2 3 ";
  } else if (f == 4) {
    cout << "YES"
         << "\n";
    for (int i = 1; i <= a; i++) cout << "0 1 ";
    for (int i = 1; i <= (b - a); i++) cout << "2 1 ";
    for (int i = 1; i <= d; i++) cout << "2 3 ";
  } else if (f == 5) {
    cout << "YES"
         << "\n";
    cout << "1 ";
    for (int i = 1; i <= a; i++) cout << "0 1 ";
    for (int i = 1; i <= (b - a - 1); i++) cout << "2 1 ";
    for (int i = 1; i <= d; i++) cout << "2 3 ";
  } else {
    cout << "YES"
         << "\n";
    for (int i = 1; i <= a; i++) cout << "0 1 ";
    for (int i = 1; i <= (b - a); i++) cout << "2 1 ";
    for (int i = 1; i <= d; i++) cout << "2 3 ";
    cout << "2";
  }
  return 0;
}
