import java.io.IOException;
import java.io.InputStream;
import java.util.NoSuchElementException;

public class Main {
	public static void main(String[] args) {
		FastScanner sc = new FastScanner();
		int H = sc.nextInt();
		int W = sc.nextInt();
		int[][] grid = new int[H][W];
		for (int i = 0; i < H; i++) {
			boolean b = true;
			String temp = sc.next();
			for (int j = 0; j < W; j++) {
				if (temp.charAt(j) == '.') {
					grid[i][j] = 1;
					if (b && j == W - 1) {
						for (int k = 0; k < W; k++) {
							grid[i][k] = 3;
						}
					}
				} else {
					grid[i][j] = -1;
					b = false;
				}
			}
		}
		for (int j = 0; j < W; j++) {
			for (int i = 0; i < H; i++) {
				if (grid[i][j] == -1) {
					break;
				} else if (i == H -1) {
					for (int k = 0; k < H; k++) {
						grid[k][j] = 0;
					}
				}
			}
		}
		for (int i = 0; i < H; i++) {
			for (int j = 0; j < W; j++) {
				if (grid[i][j] == 3) {
					break;
				}
				if (grid[i][j] == 1) {
					System.out.print(".");
				} else if (grid[i][j] == -1) {
					System.out.print("#");
				}
				if (j == W -1) {
					System.out.println();
				}
			}
		}
	}
}

class FastScanner {
    private final InputStream in = System.in;
    private final byte[] buffer = new byte[1024];
    private int ptr = 0;
    private int buflen = 0;
    private boolean hasNextByte() {
        if (ptr < buflen) {
            return true;
        } else {
            ptr = 0;
            try {
                buflen = in.read(buffer);
            } catch (IOException e) {
                e.printStackTrace();
            }
            if (buflen <= 0) {
                return false;
            }
        }
        return true;
    }

    private int readByte() {
        if (hasNextByte())
            return buffer[ptr++];
        else
            return -1;
    }

    private static boolean isPrintableChar(int c) {
        return 33 <= c && c <= 126;
    }

    public boolean hasNext() {
        while (hasNextByte() && !isPrintableChar(buffer[ptr]))
            ptr++;
        return hasNextByte();
    }

    public String next() {
        if (!hasNext())
            throw new NoSuchElementException();
        StringBuilder sb = new StringBuilder();
        int b = readByte();
        while (isPrintableChar(b)) {
            sb.appendCodePoint(b);
            b = readByte();
        }
        return sb.toString();
    }

    public long nextLong() {
        if (!hasNext())
            throw new NoSuchElementException();
        long n = 0;
        boolean minus = false;
        int b = readByte();
        if (b == '-') {
            minus = true;
            b = readByte();
        }
        if (b < '0' || '9' < b) {
            throw new NumberFormatException();
        }
        while (true) {
            if ('0' <= b && b <= '9') {
                n *= 10;
                n += b - '0';
            } else if (b == -1 || !isPrintableChar(b)) {
                return minus ? -n : n;
            } else {
                throw new NumberFormatException();
            }
            b = readByte();
        }
    }

    public int nextInt() {
        long nl = nextLong();
        if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE)
            throw new NumberFormatException();
        return (int) nl;
    }

    public double nextDouble() {
        return Double.parseDouble(next());
    }
}


Measured memory_bytes: 23636