import java.util.Scanner

import scala.annotation.tailrec

object Main {
  def main(args: Array[String]): Unit = {
    //nextLineとnextを同時に使ったら死ぬ
    val sc = new Scanner(System.in)

    val h, w = sc.nextInt()
    val map = Vector.fill(h)(sc.next().toCharArray.toVector)

    def f[T](a: Vector[Vector[T]]): Vector[Vector[T]] = {
      if (a.head.length == 1) Vector(a.map(_.head))
      else a.map(_.head) +: f(a.map(_.tail))
    }

    val ans =
      f(
        f(map.filter(vec => vec.contains('#')))
          .filter(vec => vec.contains('#'))
      )

    ans.foreach(i => println(i.mkString("")))
  }

  def debug(args: Any*): Unit = {
    Console.err.println(args.mkString(" "))
  }

  def printExecTime(process: => Unit): Unit = {
    val start = System.currentTimeMillis
    process
    debug("処理時間： " + (System.currentTimeMillis - start) + " ミリ秒")
  }

  def bitSearch[T](n: Int, choice: Vector[T]): Vector[Vector[T]] = {
    @tailrec
    def bitSearchLogic(n: Int,
                       choice: Vector[T],
                       acc: Vector[Vector[T]]): Vector[Vector[T]] = {
      if (n == 0) acc
      else {
        val newAcc =
          acc.flatMap(vec => {
            choice.map(c => vec :+ c)
          })
        bitSearchLogic(n - 1, choice, newAcc)
      }
    }

    val firstAcc = choice.map(i => Vector(i))
    bitSearchLogic(n - 1, choice, firstAcc)
  }
}
