#include <bits/stdc++.h>
using namespace std;

#define loop(i,b,e) for(auto i=b;i<=e;i++)
#define reloop(i,e,b) for(auto i=e;i>=b;i--)
#define all(x) x.begin(),x.end()
#define ll long long
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define pf printf
#define sf scanf

int r,c;
char x,m[501][501];

int main()
{
   cin >> r >> c;
   loop(i,0,r-1) {
      loop(j,0,c-1) {
         cin >> m[i][j];
         if(m[i][j] == '.')
            m[i][j] = 'D';
      }
   }
   loop(i,0,r-1) {
      loop(j,0,c-1) {
         if(m[i][j] == 'W') {
            if(m[i+1][j] == 'S' || m[i-1][j] == 'S' || m[i][j+1] == 'S' || m[i][j-1] == 'S') {
               pf("No");
               return 0;
            }
         }
      }
   }
   pf("Yes\n");
   loop(i,0,r-1) {
      loop(j,0,c-1)
         pf("%c",m[i][j]);
      pf("\n");
   }
}