#include <bits/stdc++.h>
using namespace std;
int n, m;
int dx[] = {0, -1, 0, 1};
int dy[] = {-1, 0, 1, 0};
char a[505][505];
int main() {
  cin >> n >> m;
  for (int i = 1; i <= n; i++) cin >> a[i] + 1;
  bool flag = 1;
  for (int i = 1; i <= n; i++)
    for (int j = 1; j <= m; j++) {
      for (int k = 0; k <= 3; k++) {
        if (a[i + dx[k]][j + dy[k]] == 'S' && a[i][j] == 'W') flag = 0;
        if (a[i + dx[k]][j + dy[k]] == 'W' && a[i][j] == 'S') flag = 0;
      }
      if (a[i][j] != 'W' && a[i][j] != 'S') a[i][j] = 'D';
    }
  if (flag == 0) {
    cout << "No" << endl;
  } else {
    cout << "Yes" << endl;
    for (int i = 1; i <= n; i++) {
      for (int j = 1; j <= m; j++) {
        cout << a[i][j];
      }
      cout << endl;
    }
  }
  return 0;
}
