using System;
using System.Linq;

namespace No455{
    public class Program{
        public static void Main(string[] args){
            var sr = new StreamReader();
            //---------------------------------
            var H = sr.Next<int>();
            var W = sr.Next<int>();
            var S = sr.Next<string>(H).Select(a => a.ToCharArray()).ToArray();

            var xs = new int[3];
            var ys = new int[3];

            var cnt = 0;
            for(var i = 0; i < H; i++){
                for(var j = 0; j < W; j++){
                    if(S[i][j] == '*'){
                        xs[cnt] = j;
                        ys[cnt] = i;
                        cnt++;
                    }
                }
            }

            var rand = new Random();
            while(true){
                xs[2] = rand.Next(0, W);
                ys[2] = rand.Next(0, H);
                if((xs[0] * ys[1] + xs[1] * ys[2] + xs[2] * ys[0]) - (ys[0] * xs[1] + ys[1] * xs[2] + ys[2] * xs[0]) != 0) break;
            }
            S[ys[2]][xs[2]] = '*';

            Array.ForEach(S, Console.WriteLine);
            //---------------------------------
        }
    }

    public class StreamReader{
        private readonly char[] _c = {' '};
        private int _index = -1;
        private string[] _input = new string[0];
        private readonly System.IO.StreamReader _sr = new System.IO.StreamReader(Console.OpenStandardInput());

        public T Next<T>(){
            if(_index == _input.Length - 1){
                _index = -1;
                while(true){
                    string rl = _sr.ReadLine();
                    if(rl == null){
                        if(typeof(T).IsClass) return default(T);
                        return (T)typeof(T).GetField("MinValue").GetValue(null);
                    }
                    if(rl != ""){
                        _input = rl.Split(_c, StringSplitOptions.RemoveEmptyEntries);
                        break;
                    }
                }
            }
            return (T)Convert.ChangeType(_input[++_index], typeof(T), System.Globalization.CultureInfo.InvariantCulture);
        }

        public T[] Next<T>(int x){
            var ret = new T[x];
            for(var i = 0; i < x; ++i) ret[i] = Next<T>();
            return ret;
        }

        public T[][] Next<T>(int y, int x){
            var ret = new T[y][];
            for(var i = 0; i < y; ++i) ret[i] = Next<T>(x);
            return ret;
        }
    }
}