#include <iostream>
#include <vector>
#include <algorithm>

using namespace std;

int main()
{
  int n, k;
  cin >> n >> k;
  int px[2], py[2];
  for (int i = 0; i < 2; ++i) cin >> px[i] >> py[i];
  for (int i = 0; i < 2; ++i)
  {
    --px[i];
    --py[i];
  }
  int tmpd = abs(px[0] - px[1]) + abs(py[0] - py[1]);
  if (k < tmpd || 2 * tmpd < k || tmpd % 2 != k % 2)
  {
    cout << "-1\n";
    return 0;
  }
  int sima = k - tmpd;
  vector<string> s(n, string(n, '.'));
  for (int i = 0; i < n; ++i)
  {
    for (int j = 0; j < n; ++j)
    {
      int tmp = abs(i - px[0]) + abs(j - py[0]);
      if (tmp % 2 && tmp < sima) s[i][j] = '#';
    }
  }
  for (int i = 0; i < n; ++i) cout << s[i] << endl;
}