#include "bits/stdc++.h"

int main() {
    int R, K;
    std::cin >> R >> K;

    std::string pattern;
    std::cin >> pattern;

    int len = pattern.length();

    for (int k = 0; k < K; ++k) {
        std::string next_pattern = pattern;
        for (int i = 0; i < len; ++i) {
            int state = 0;
            if (i != 0) {
                state |= (pattern[i - 1] == 'X' ? 1 : 0) << 2;
            }
            if (i != len-1) {
                state |= (pattern[i + 1] == 'X' ? 1 : 0);
            }

            state |= (pattern[i] == 'X' ? 1 : 0) << 1;

            bool next = (R >> state) & 0b1;
            next_pattern[i] = next ? 'X' : '.';

//            std::cout << "Iter: " << k << ", bit: " << i << ", state: " << state << ", next: " << next << std::endl;
        }
        std::cout << next_pattern << std::endl;
        pattern = next_pattern;
    }


    return 0;
}