import kotlin.random.Random
import kotlin.system.exitProcess

val br = System.`in`.bufferedReader()

fun readLine(): String? = br.readLine()
fun readString() = readLine()!!
fun readStrings() = readLine()?.split(" ")?.filter { it.isNotEmpty() } ?: listOf()
fun readInts() = readStrings().map { it.toInt() }.toIntArray()

const val MAX_STACK_SIZE: Long = 128 * 1024 * 1024

fun main() {
    val thread = Thread(null, ::run, "solve", MAX_STACK_SIZE)
    thread.setUncaughtExceptionHandler { _, e -> e.printStackTrace(); exitProcess(1) }
    thread.start()
}

fun run() {
    val (H, W) = readInts()
    val S = Array(H) { readString().toCharArray() }
    output(solve(H, W, S))
}

fun solve(H: Int, W: Int, S: Array<CharArray>): Array<CharArray> {
    while (true) {
        val r = Random.nextInt(H)
        val c = Random.nextInt(W)
        if (S[r][c] == '*') continue

        var sameCol = 0
        for (r0 in 0 until H) {
            if (S[r0][c] == '*') sameCol++
        }
        if (sameCol > 1) continue

        var sameRow = 0
        for (c0 in 0 until W) {
            if (S[r][c0] == '*') sameRow++
        }
        if (sameRow > 1) continue

        var sameDiag = 0
        var r0 = r
        var c0 = c
        while (r0 >= 0 && c0 >= 0) {
            if (S[r0][c0] == '*') sameDiag++
            r0--
            c0--
        }
        r0 = r
        c0 = c
        while (r0 < H && c0 < W) {
            if (S[r0][c0] == '*') sameDiag++
            r0++
            c0++
        }
        if (sameDiag > 1) continue

        sameDiag = 0
        r0 = r
        c0 = c
        while (r0 >= 0 && c0 < W) {
            if (S[r0][c0] == '*') sameDiag++
            r0--
            c0++
        }
        r0 = r
        c0 = c
        while (r0 < H && c0 >= 0) {
            if (S[r0][c0] == '*') sameDiag++
            r0++
            c0--
        }
        if (sameDiag > 1) continue

        S[r][c] = '*'
        return S
    }
}

fun output(res: Array<CharArray>) =
    res.joinToString("\n") { it.joinToString("") }
        .apply { println(this) }