#include <bits/stdc++.h>
using namespace std;
typedef complex<double> P;

int main() {
	int h, w;
	cin >> h >> w;

	vector<string> s(h);
	vector<P> star(3);
	int cnt = 0;

	for (int i = 0; i < h; i++) {
		cin >> s[i];
		for (int j = 0; j < w; j++) {
			if (s[i][j] == '*') star[cnt++] = P(i, j);
		}
	}

	while (true) {
		star[2] = P(rand() % h, rand() % w);
		P vec1 = star[1] - star[0];
		P vec2 = star[2] - star[0];
		if (vec1.real() * vec2.imag() - vec1.imag() * vec2.real() != 0) {
			s[star[2].real()][star[2].imag()] = '*';
			for (int i = 0; i < h; i++) {
				cout << s[i] << endl;
			}
			return 0;
		}
	}                                           

	return 0;
}