using System;
using System.Collections.Generic;
using P = System.Numerics.Complex;

class Program
{
    static void Main()
    {
        string[] str = Console.ReadLine().Split(' ');
        int h = int.Parse(str[0]);
        int w = int.Parse(str[1]);

        var s = new List<char[]>(3);
        var star = new List<P>(3);

        for (int i = 0; i < h; i++)
        {
            s.Add(Console.ReadLine().ToCharArray());
            for (int j = 0; j < w; j++)
                if (s[i][j] == '*') star.Add(new P(i, j));
        }

        var rand = new Random();
        int sh, sw;

        while (true)
        {
            sh = rand.Next(h);
            sw = rand.Next(w);
            if (star.Count < 3) star.Add(new P(sh, sw));
            else star[2] = new P(sh, sw);
            P vec1 = star[1] - star[0];
            P vec2 = star[2] - star[0];
            if (vec1.Real * vec2.Imaginary - vec1.Imaginary * vec2.Real != 0)
            {
                s[sh][sw] = '*';
                for (int i = 0; i < h; i++) Console.WriteLine(s[i]);
                return;
            }
        }
    }
}