#include <bits/stdc++.h>

using namespace std;

int main()
{
        int r, k;
        scanf("%d %d", &r, &k);

        vector<bool> generation;
        generation.push_back(false);

        string first;
        cin >> first;

        for (int i = 0; i < first.length(); i++)
        {
                if (first[i] == '.')
                {
                        generation.push_back(false);
                }
                else generation.push_back(true);
        }

        generation.push_back(false);
        vector<bool> S;// = {1, 0, 0, 0, 0, 0, 0, 0};
        //int mask = 0b10000000

        for (int i = 7; i >= 0; i--)
        {
            int tmp = 1 << i;
            if ((r & tmp) == 0) S.push_back(0);
            else S.push_back(1);
            //printf("%d\n", r & tmp);
            //S.push_back(r & tmp);
            /*r = r >> 1;
            S.push_back(r & 1);
            printf("%d\n", S.at(i));*/
        }
    //printf("next\n");
        /*for (int i = 0; i < 8; i++)
        {
            //printf("%d\n", S.at(i));
            if (S.at(i) == 0) printf("0\n");
            else printf("1\n");
        }*/

        for (int i = 0; i < k; i++)
        {
                vector<bool> new_generation;
                new_generation.push_back(false);
                for (int j = 1; j < generation.size() - 1; j++)
                {
                         if (generation[j - 1] == 1 && generation[j] == 1 && generation[j + 1] == 1) new_generation.push_back(S[0]);
                    else if (generation[j - 1] == 1 && generation[j] == 1 && generation[j + 1] == 0) new_generation.push_back(S[1]);
                    else if (generation[j - 1] == 1 && generation[j] == 0 && generation[j + 1] == 1) new_generation.push_back(S[2]);
                    else if (generation[j - 1] == 1 && generation[j] == 0 && generation[j + 1] == 0) new_generation.push_back(S[3]);
                    else if (generation[j - 1] == 0 && generation[j] == 1 && generation[j + 1] == 1) new_generation.push_back(S[4]);
                    else if (generation[j - 1] == 0 && generation[j] == 1 && generation[j + 1] == 0) new_generation.push_back(S[5]);
                    else if (generation[j - 1] == 0 && generation[j] == 0 && generation[j + 1] == 1) new_generation.push_back(S[6]);
                    else if (generation[j - 1] == 0 && generation[j] == 0 && generation[j + 1] == 0) new_generation.push_back(S[7]);
                }
                new_generation.push_back(false);
                for (int j = 1; j < new_generation.size() - 1; j++)
                {
                    if (new_generation[j]) printf("X");
                    else printf(".");
                }
                printf("\n");
                generation = new_generation;
        }
        return 0;
}

/*
128 5
XXXXXXXXXXXXX
*/

/*
30 10
...........X...........
*/