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))
}

typealias Vector2 = Pair<Int, Int>

operator fun Vector2.minus(other: Vector2): Vector2 {
    val (x1, y1) = this
    val (x2, y2) = other
    return Vector2(x1 - x2, y1 - y2)
}

infix fun Vector2.cross(other: Vector2): Int {
    val (x1, y1) = this
    val (x2, y2) = other
    return x1 * y2 - y1 * x2
}

fun solve(H: Int, W: Int, S: Array<CharArray>): Array<CharArray> {
    val rows = H
    val cols = W
    val stars = mutableListOf<Pair<Int, Int>>()
    for (r in 0 until rows) {
        for (c in 0 until cols) {
            if (S[r][c] == '*') stars.add(r to c)
        }
    }
    for (r in 0 until rows) {
        for (c in 0 until cols) {
            if (S[r][c] == '*') continue
            val a = stars[1] - stars[0]
            val b = Vector2(r, c) - stars[0]
            if (a cross b == 0) continue
            S[r][c] = '*'
            return S
        }
    }

    return S
}

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