#include<bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i,m,n) for(int i=m; i<n; ++i)
#define repl(i,m,n) for(ll i=m; i<n; ++i)
#define all(a) (a).begin(), (a).end()
#define rall(a) (a).rbegin(), (a).rend()

int gcd(int a, int b){
    return a % b ? gcd(b, a % b) : b;
}

pair<int, int> slope(int y1, int x1, int y2, int x2){
    int y = y2 - y1, x = x2 - x1;
    int g = gcd(abs(y), abs(x));
    return {y/g, x/g};
}

int main(){
    int H, W;
    cin >> H >> W;
    vector<string> S(H);
    rep(i, 0, H) cin >> S[i];

    int x1 = -1, y1 = -1, x2 = -1, y2 = -1;
    rep(y, 0, H) rep(x, 0, W){
        if(S[y][x] == '*'){
            if(x1 == -1){
                x1 = x, y1 = y;
            }else{
                x2 = x, y2 = y;
                break;
            }
        }
    }

    int ans_y, ans_x;
    if(y1 == y2){
        rep(y, 0, H) rep(x, 0, W){
            if(y == y1 && x == x1) continue;
            if(y == y2 && x == x2) continue;
            if(y != y1){
                ans_y = y, ans_x = x;
                break;
            }
        }
    }else if(x1 == x2){
        rep(y, 0, H) rep(x, 0, W){
            if(y == y1 && x == x1) continue;
            if(y == y2 && x == x2) continue;
            if(x != x1){
                ans_y = y, ans_x = x;
                break;
            }
        }
    }else{
        auto s1 = slope(y1, x1, y2, x2);

        rep(y, 0, H) rep(x, 0, W){
            if(y == y1 && x == x1) continue;
            if(y == y2 && x == x2) continue;
            auto s = slope(y, x, y1, x1);
            if(s != s1){
                ans_y = y, ans_x = x;
                break;
            }
        }
    }

    rep(y, 0, H){
        rep(x, 0, W){
            if(y == ans_y && x == ans_x) cout << "*";
            else cout << S[y][x];
        }
        cout << endl;
    }
    return 0;
}