#include<bits/stdc++.h>
using namespace std;

// #define int long long
#define fo(i,b) for(int i = (0); i < (b); ++i)
#define f(i,a,b) for(int i = (a); i < (b); ++i)
#define rep(i,a,b) for(int i = (a); i < (b); ++i)
typedef pair<int, int> pii;
typedef vector<int> vi;


int r,k;
char in[1000];
char out[1000];

signed main() {
	scanf("%d%d %s", &r, &k, in+1);
	fo(i,k)
	{
		for(int i=1; in[i];i++)
		{
			int m = 0;
			m +=(in[i-1]=='X')<<2;
			m +=(in[i]=='X')<<1;
			m +=(in[i+1]=='X')<<0;
			out[i]=(r>>m)&1?'X':'.';
		}
		strcpy(in+1, out+1);
		printf("%s\n", in+1);
	}
}