import java.io.*;
import java.util.*;

public class Main {
  public static void main(String[] args) throws IOException {
    BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

    String lineH = reader.readLine();
    if (lineH == null)
      return;
    int h = Integer.parseInt(lineH.trim());

    String lineW = reader.readLine();
    if (lineW == null)
      return;
    int w = Integer.parseInt(lineW.trim());

    int[] sandCounts = new int[w];
    int[] stoneCounts = new int[w];

    for (int i = 0; i < h; i++) {
      String line = reader.readLine();
      if (line == null)
        break;
      StringTokenizer st = new StringTokenizer(line);
      for (int j = 0; j < w; j++) {
        if (st.hasMoreTokens()) {
          String cell = st.nextToken();
          if (cell.equals("x")) {
            stoneCounts[j]++;
          } else if (cell.equals("0")) {
            sandCounts[j]++;
          }
        }
      }
    }

    for (int c = 0; c < w; c++) {
      int initialStones = stoneCounts[c];
      for (int k = 0; k < initialStones; k++) {
        stoneCounts[c]--;

        int currentHeight = sandCounts[c] + stoneCounts[c];

        if (c < w - 1 && (sandCounts[c + 1] + stoneCounts[c + 1]) - currentHeight > 1 && sandCounts[c + 1] > 0) {
          sandCounts[c + 1]--;
          sandCounts[c]++;
        } else if (c > 0 && (sandCounts[c - 1] + stoneCounts[c - 1]) - currentHeight > 1 && sandCounts[c - 1] > 0) {
          sandCounts[c - 1]--;
          sandCounts[c]++;
        }
      }
    }

    StringBuilder out = new StringBuilder();
    for (int r = 0; r < h; r++) {
      for (int c = 0; c < w; c++) {
        if (r < h - sandCounts[c]) {
          out.append("-");
        } else {
          out.append("0");
        }
        if (c < w - 1)
          out.append(" ");
      }
      out.append("\n");
    }
    System.out.print(out);
  }
}