#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vll = vector<ll>;
#define sz(x) ((ll)(x).size())
const ll MOD = 1e9+7;

// template<typename T>
// ostream operator<<(ostream &os, const vector<T>)

int main() {
    ll R, K;
    cin >> R >> K;
    string layer0;
    cin >> layer0;
    layer0 = '.' + layer0 + '.';

    for (int li = 0; li < K; ++li) {
        string layer1(sz(layer0), '.');
        for (int i = 1; i < sz(layer0) - 1; ++i) {
            int b = 
                ((layer0[i-1] == 'X') << 2) |
                ((layer0[i  ] == 'X') << 1) |
                ((layer0[i+1] == 'X') << 0);
            layer1[i] = R & (1 << b) ? 'X' : '.';
        }
        layer0 = layer1;
        string out = layer0.substr(1, sz(layer0) - 2);
        cout << out << '\n';
    }
}