#include <bits/stdc++.h>
using namespace std;
char s[505][505];
int main() {
  int n, m;
  cin >> n >> m;
  for (int i = 1; i <= n; i++) {
    for (int j = 1; j <= m; j++) {
      scanf(" %c", &s[i][j]);
    }
  }
  bool ok = 1;
  for (int i = 1; i <= n; i++) {
    for (int j = 1; j <= m; j++) {
      if (s[i][j] == 'W') {
        if (s[i + 1][j] == '.')
          s[i + 1][j] = 'D';
        else if (s[i + 1][j] == 'S')
          ok = 0;
        if (s[i - 1][j] == '.')
          s[i - 1][j] = 'D';
        else if (s[i - 1][j] == 'S')
          ok = 0;
        if (s[i][j + 1] == '.')
          s[i][j + 1] = 'D';
        else if (s[i][j + 1] == 'S')
          ok = 0;
        if (s[i][j - 1] == '.')
          s[i][j - 1] = 'D';
        else if (s[i][j - 1] == 'S')
          ok = 0;
        if (!ok) {
          cout << "No" << endl;
          return 0;
        }
      }
    }
  }
  cout << "Yes" << endl;
  for (int i = 1; i <= n; i++) {
    for (int j = 1; j <= m; j++) {
      printf("%c", s[i][j]);
    }
    printf("\n");
  }
}
