package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
	"strings"
)

func configure(scanner *bufio.Scanner) {
	scanner.Split(bufio.ScanWords)
	scanner.Buffer(make([]byte, 1000005), 1000005)
}
func getNextString(scanner *bufio.Scanner) string {
	scanned := scanner.Scan()
	if !scanned {
		panic("scan failed")
	}
	return scanner.Text()
}
func getNextInt(scanner *bufio.Scanner) int {
	i, _ := strconv.Atoi(getNextString(scanner))
	return i
}
func getNextInt64(scanner *bufio.Scanner) int64 {
	i, _ := strconv.ParseInt(getNextString(scanner), 10, 64)
	return i
}
func getNextFloat64(scanner *bufio.Scanner) float64 {
	i, _ := strconv.ParseFloat(getNextString(scanner), 64)
	return i
}
func main() {
	fp := os.Stdin
	wfp := os.Stdout
	extra := 0
	if os.Getenv("I") == "IronMan" {
		fp, _ = os.Open(os.Getenv("END_GAME"))
		extra = 100
	}
	scanner := bufio.NewScanner(fp)
	configure(scanner)
	writer := bufio.NewWriter(wfp)
	defer func() {
		r := recover()
		if r != nil {
			fmt.Fprintln(writer, r)
		}
		writer.Flush()
	}()
	solve(scanner, writer)
	for i := 0; i < extra; i++ {
		fmt.Fprintln(writer, "-----------------------------------")
		solve(scanner, writer)
	}
}
func solve(scanner *bufio.Scanner, writer *bufio.Writer) {
	h := getNextInt(scanner)
	w := getNextInt(scanner)
	ss := make([][]string, h)
	for i := 0; i < h; i++ {
		ss[i] = strings.Split(getNextString(scanner), "")
	}
	star := make([][2]int, 0)
	for i := 0; i < h; i++ {
		for j := 0; j < w; j++ {
			if ss[i][j] == "*" {
				star = append(star, [2]int{i, j})
			}
		}
	}
	g := gcd(star[1][0]-star[0][0], star[1][1]-star[0][1])
	y := (star[1][0] - star[0][0]) / g
	x := (star[1][1] - star[0][1]) / g
	disable := makeGrid(h, w)
	for i, j := star[0][0], star[0][1]; i < h && i >= 0 && j >= 0 && j < w; i += y {
		disable[i][j] = true
		j += x
	}
	for i, j := star[0][0], star[0][1]; i >= 0 && i < h && j >= 0 && j < w; i -= y {
		disable[i][j] = true
		j -= x
	}
	for i := 0; i < h; i++ {
		for j := 0; j < w; j++ {
			if disable[i][j] {
				continue
			}
			ss[i][j] = "*"
			for k := 0; k < h; k++ {
				fmt.Fprintln(writer, strings.Join(ss[k], ""))
			}
			return
		}
	}
}
func makeGrid(h, w int) [][]bool {
	index := make([][]bool, h, h)
	data := make([]bool, h*w, h*w)
	for i := 0; i < h; i++ {
		index[i] = data[i*w : (i+1)*w]
	}
	return index
}
func gcd(m, n int) int {
	if n == 0 {
		return m
	}
	return gcd(n, m%n)
}