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

int main() {
    
    // 1. 入力情報取得.
    int H, W;
    cin >> H >> W;
    
    // 2. 冬の大三角を構成.
    // 2-1. 星の位置を取得.
    string ans[H];
    int r1 = -1, r2 = -1, c1 = -1, c2 = -1;
    for(int i = 0; i < H; i++){
        string s;
        cin >> s;
        ans[i] = s;
        int f = s.find("*");
        int e = s.rfind("*", W - 1);
        if(f != e) r1 = i, c1 = f, r2 = i, c2 = e;
        if(f == e){
            if(r1 == -1 && f != -1){
                r1 = i, c1 = f;
                continue;
            }
            if(r2 == -1 && e != -1){
                r2 = i, c2 = e;
                // continue;
                break;
            }
        }
    }

    // 2-2. 三つ目の星の位置を設定.
    // cout << r1 << " " << c1 << " " << r2 << " " << c2 << endl;
    int r3 = -1, c3 = -1;
    if(r1 == 0 && r2 == 0) r3 = 1, c3 = c1;
    if(r1 == 0 && r2 > 0 && c1 == c2) r3 = 0, c3 = W - 1 - c1;
    if(r1 == 0 && r2 > 0 && c1 != c2) r3 = 0, c3 = c2;
    if(r1 > 0 && r2 == 0 && c1 == c2) r3 = 0, c3 = W - 1 - c1;
    if(r1 > 0 && r2 == 0 && c1 != c2) r3 = 0, c3 = c1;
    if(r1 > 0 && r2 > 0 && c1 != c2) r3 = 0, c3 = c1;
    if(r1 > 0 && r2 > 0 && c1 == c2) r3 = 0, c3 = W - 1 - c1;
    // cout << r3 << " " << c3 << endl;
    ans[r3][c3] = '*';

    // 3. 後処理.
    for(int i = 0; i < H; i++) cout << ans[i] << endl;
    return 0;
    
}