#include <iostream>
#include <cassert>
#include <vector>

using namespace std;

int main() {
  int N, K; cin >> N >> K;
  vector<string> B(N);
  for (string &t: B) cin >> t;

  vector<vector<char>> ans(N * K, vector<char>(N * K, '.'));
  for (int i = 0; i < N; i++) {
    for (int j = 0; j < N; j++) {
      if (B[i][j] == '#') {
	for (int k = i * K; k < i * K + K; k++) {
	  for (int x = j * K; x < j * K + K; x++) {
	    ans[k][x] = '#';
	  }
	}
      }
    }
  }
  for (const vector<char> cs: ans) {
    for (char c: cs) {
      cout << c;
    }
    cout << endl;
  }
  return 0;
}