#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  int r, c, i, j, flag = 0;
  cin >> r >> c;
  char a[r + 2][c + 2];
  for (i = 0; i < (r + 2); i++) {
    for (j = 0; j < (c + 2); j++) a[i][j] = '.';
  }
  for (i = 1; i < (r + 1); i++) {
    for (j = 1; j < (c + 1); j++) {
      cin >> a[i][j];
    }
  }
  for (i = 1; i < (r + 1); i++) {
    for (j = 1; j < (c + 1); j++) {
      if (a[i][j] == 'S') {
        if (a[i + 1][j] == 'W' || a[i][j + 1] == 'W' || a[i - 1][j] == 'W' ||
            a[i][j - 1] == 'W') {
          flag = 1;
          cout << "No\n";
          break;
        }
      }
    }
    if (flag == 1) break;
  }
  if (flag == 0) {
    cout << "Yes\n";
    for (i = 1; i < (r + 1); i++) {
      for (j = 1; j < (c + 1); j++) {
        if (a[i][j] == '.')
          cout << "D";
        else
          cout << a[i][j];
      }
      cout << "\n";
    }
  }
  return 0;
}
