// No.455 冬の大三角
// https://yukicoder.me/problems/no/455
//

#include <iostream>
#include <vector>
#include <string>
#include <cmath>
#include <utility>
#include <random>
using namespace std;

pair<int, int> solve(vector<pair<int, int>>& stars, int H, int W);
struct Point {
    double x;
    double y;
};


int main() {
    std::cin.tie(nullptr);
    std::ios::sync_with_stdio(false);

    int H, W;
    cin >> H >> W;
    vector<pair<int, int>> stars;
    string t;
    getline(cin, t);

    vector<string> field;
    for (int y = 0; y < H; ++y) {
        getline(cin, t);
        for (int x = 0; x < W; ++x) {
            if (t[x] == '*')
                stars.push_back(make_pair(x, y));
        }
        field.push_back(t);
    }

    pair<int, int> ans = solve(stars, H, W);

    field[ans.second][ans.first] = '*';
    for (int y = 0; y < H; ++y)
        cout << field[y] << endl;
}


pair<int, int> solve(vector<pair<int, int>>& stars, int H, int W) {
    random_device seed_gen;
    mt19937 engine(seed_gen());
    uniform_int_distribution<> dist_x(0, W-1);
    uniform_int_distribution<> dist_y(0, H-1);
    while (true) {
        int x = dist_x(engine);
        int y = dist_y(engine);
        if (x == stars[0].first && y == stars[0].second)
            continue;
        if (x == stars[1].first && y == stars[1].second)
            continue;

        Point ab = {static_cast<double>(x) - stars[0].first, static_cast<double>(y) - stars[0].second};
        Point ac = {static_cast<double>(x) - stars[1].first, static_cast<double>(y) - stars[1].second};
        double cross = ab.x * ac.y - ab.y * ac.x;
        if (abs(cross) > 0.0001)
            return make_pair(x, y);
    }
}