#include <bits/stdc++.h>

using namespace std;
using ll = long long;

int main() {
	int s, n;
	cin >> s >> n;

	string ist;
	string st;
	cin >> ist;
	st.push_back('.');
	st += ist;
	st.push_back('.');

	int sz = ist.size();

	string nst;
	for(int i = 0; i < n; ++i) {
		nst.clear();
		nst.resize(sz+2);

		nst[0] = '.';
		nst[sz-1] = '.';
		for(int j = 1; j <= sz; ++j) {
			int val = (st[j-1] == 'X')*4 + (st[j] == 'X')*2 + (st[j+1] == 'X');
			nst[j] = ((s >> val) & 1) ? 'X' : '.';
			cout << nst[j];
		}
		cout << '\n';
		st = nst;
	}

	return 0;
}