#include <bits/stdc++.h>
using namespace std;
int caseno = 1;
typedef long long LL;
typedef unsigned long long ULL;
template <class T>
inline void SWAP(T &a, T &b) {
  T t = a;
  a = b;
  b = t;
}
inline LL POW(LL base, LL power) {
  LL res = base;
  if (power == 0) return 1;
  for (int I = 0; I < power - 1; I++) res *= base;
  return res;
}
int ToInt(string s) {
  int r = 0;
  istringstream sin(s);
  sin >> r;
  return r;
}
double ToDouble(string s) {
  double r = 0;
  istringstream sin(s);
  sin >> r;
  return r;
}
string ToString(int n) {
  string s;
  stringstream convert;
  convert << n;
  s = convert.str();
  return s;
}
const int SIZE = 500 + 10;
string S[SIZE];
int main() {
  std::ios_base::sync_with_stdio(0);
  int T, I, J, K, N, n, m, k, cnt = 0, len, R, C;
  cin >> R >> C;
  for (I = 0; I < R; I++) cin >> S[I];
  for (I = 0; I < R; I++) {
    for (J = 0; J < C; J++) {
      if (S[I][J] == '.') S[I][J] = 'D';
    }
  }
  for (I = 0; I < R; I++) {
    for (J = 0; J < C; J++) {
      if (S[I][J] == 'S' && ((J + 1 < C && S[I][J + 1] == 'W') ||
                             (J - 1 >= 0 && S[I][J - 1] == 'W') ||
                             (I + 1 < R && S[I + 1][J] == 'W') ||
                             (I - 1 >= 0 && S[I - 1][J] == 'W'))) {
        cout << "No\n";
        return 0;
      }
    }
  }
  cout << "Yes\n";
  for (I = 0; I < R; I++) {
    for (J = 0; J < C; J++) cout << S[I][J];
    cout << '\n';
  }
  return 0;
}
