#include <bits/stdc++.h>
using namespace std;
string a[101], s1, s;
int main() {
  int n;
  cin >> n;
  int mid = n / 2 + 1;
  for (int i = 1; i <= n / 2; i++) {
    s1 = "", s = "";
    for (int j = 1; j <= mid - i; j++) s1 = s1 + "*";
    for (int j = 1; j <= 2 * i - 1; j++) s = s + "D";
    s = s1 + s + s1;
    a[i] = s;
  }
  for (int i = 0; i < n; i++) a[mid] += "D";
  for (int i = mid + 1; i <= n; i++) {
    s = "", s1 = "";
    for (int j = 1; j <= i - mid; j++) s1 = s1 + "*";
    for (int j = 1; j <= n - 2 * (i - mid); j++) s = s + "D";
    a[i] = s1 + s + s1;
  }
  for (int i = 1; i <= n; i++) cout << a[i] << "\n";
}
