#define _CRT_SECURE_NO_WARNINGS
#include<sstream>
#include<iostream>
#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<climits>
#include<cmath>
#include<string>
#include<vector>
#include<set>
#include<map>
#include<queue>
#include<numeric>
#include<functional>
#include<algorithm>
#include<bitset>
#include<tuple>
#include<unordered_set>
#include<random>
using namespace std;
#define INF (1<<29)
#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define all(v) v.begin(),v.end()
#define uniq(v) v.erase(unique(all(v)),v.end())




int h, w;
string s[100];
vector<int> v;

void put() {
	rep(i, h)rep(j, w) {
		if (s[i][j] != '*' && (v[0] - i) * (v[3] - j) - (v[1] - j) * (v[2] - i) != 0) {
			s[i][j] = '*';
			return;
		}
	}
}


int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	

	cin >> h >> w;
	rep(i, h) {
		cin >> s[i];
		rep(j, w) {
			if (s[i][j] == '*') {
				v.push_back(i);
				v.push_back(j);
			}
		}
	}
	put();

	rep(i,h) {
		cout << s[i] << endl;
	}


	return 0;
}