#include <bits/stdc++.h>
using namespace std;
const double PI = acos(-1);
const double eps = 1e-9;
const int inf = 2000000000;
const long long infLL = 9000000000000000000;
inline bool checkBit(long long n, int i) { return n & (1LL << i); }
inline long long setBit(long long n, int i) {
  return n | (1LL << i);
  ;
}
inline long long resetBit(long long n, int i) { return n & (~(1LL << i)); }
int dx[] = {0, 0, +1, -1};
int dy[] = {+1, -1, 0, 0};
inline bool EQ(double a, double b) { return fabs(a - b) < 1e-9; }
inline bool isLeapYear(long long year) {
  return (year % 400 == 0) || (year % 4 == 0 && year % 100 != 0);
}
inline void normal(long long &a) {
  a %= 1000000007;
  (a < 0) && (a += 1000000007);
}
inline long long modMul(long long a, long long b) {
  a %= 1000000007, b %= 1000000007;
  normal(a), normal(b);
  return (a * b) % 1000000007;
}
inline long long modAdd(long long a, long long b) {
  a %= 1000000007, b %= 1000000007;
  normal(a), normal(b);
  return (a + b) % 1000000007;
}
inline long long modSub(long long a, long long b) {
  a %= 1000000007, b %= 1000000007;
  normal(a), normal(b);
  a -= b;
  normal(a);
  return a;
}
inline long long modPow(long long b, long long p) {
  long long r = 1;
  while (p) {
    if (p & 1) r = modMul(r, b);
    b = modMul(b, b);
    p >>= 1;
  }
  return r;
}
inline long long modInverse(long long a) { return modPow(a, 1000000007 - 2); }
inline long long modDiv(long long a, long long b) {
  return modMul(a, modInverse(b));
}
template <typename first, typename second>
ostream &operator<<(ostream &os, const pair<first, second> &p) {
  return os << "(" << p.first << ", " << p.second << ")";
}
template <typename T>
ostream &operator<<(ostream &os, const vector<T> &v) {
  os << "{";
  for (auto it = v.begin(); it != v.end(); ++it) {
    if (it != v.begin()) os << ", ";
    os << *it;
  }
  return os << "}";
}
template <typename T>
ostream &operator<<(ostream &os, const set<T> &v) {
  os << "[";
  for (auto it = v.begin(); it != v.end(); ++it) {
    if (it != v.begin()) os << ", ";
    os << *it;
  }
  return os << "]";
}
template <typename T>
ostream &operator<<(ostream &os, const multiset<T> &v) {
  os << "[";
  for (auto it = v.begin(); it != v.end(); ++it) {
    if (it != v.begin()) os << ", ";
    os << *it;
  }
  return os << "]";
}
template <typename first, typename second>
ostream &operator<<(ostream &os, const map<first, second> &v) {
  os << "[";
  for (auto it = v.begin(); it != v.end(); ++it) {
    if (it != v.begin()) os << ", ";
    os << it->first << " = " << it->second;
  }
  return os << "]";
}
clock_t tStart = clock();
void faltu() { cerr << '\n'; }
template <typename T>
void faltu(T a[], int n) {
  for (int i = 0; i < n; ++i) cerr << a[i] << ' ';
  cerr << '\n';
}
template <typename T, typename... hello>
void faltu(T arg, const hello &...rest) {
  cerr << arg << ' ';
  faltu(rest...);
}
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  ;
  int r, c;
  cin >> r >> c;
  string s[r];
  for (int i = 0; i < r; ++i) {
    cin >> s[i];
  }
  for (int i = 0; i < r - 1; ++i) {
    for (int j = 0; j < c - 1; ++j) {
      if (s[i][j] == 'S' && s[i + 1][j] == 'W') {
        cout << "No";
        return 0;
      }
      if (s[i][j] == 'S' && s[i][j + 1] == 'W') {
        cout << "No";
        return 0;
      }
      if (s[i][j] == 'W' && s[i + 1][j] == 'S') {
        cout << "No";
        return 0;
      }
      if (s[i][j] == 'W' && s[i][j + 1] == 'S') {
        cout << "No";
        return 0;
      }
    }
  }
  for (int j = 0; j < c - 1; ++j) {
    if (s[r - 1][j] == 'S' && s[r - 1][j + 1] == 'W') {
      cout << "No";
      return 0;
    }
    if (s[r - 1][j] == 'W' && s[r - 1][j + 1] == 'S') {
      cout << "No";
      return 0;
    }
  }
  for (int i = 0; i < r - 1; ++i) {
    if (s[i][c - 1] == 'S' && s[i + 1][c - 1] == 'W') {
      cout << "No";
      return 0;
    }
    if (s[i][c - 1] == 'W' && s[i + 1][c - 1] == 'S') {
      cout << "No";
      return 0;
    }
  }
  cout << "Yes" << '\n';
  for (int i = 0; i < r; ++i) {
    for (int j = 0; j < c; ++j) {
      if (s[i][j] == '.')
        cout << 'D';
      else
        cout << s[i][j];
    }
    cout << '\n';
  }
}
