#include <iostream>
#include <random>
using namespace std;

int main(){
	int h, w;
	cin >> h >> w;
	string s[h];
	for(int i = 0; i < h; i++) cin >> s[i];
	random_device rnd;
	int a = rnd() % h, b = rnd() % w;
	while(s[a][b] == '*'){
		a = rnd() % h;
		b = rnd() % w;
	}
	s[a][b] = '*';
	for(int i = 0; i < h; i++) cout << s[i] << endl;
}