using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using static System.Console;

class Program
{
    static void Main(string[] args)
    {
        new Program().Calc();
    }

    Scanner cin;

    public Program() { }

    bool chmax<T>(ref T a, T b) where T : IComparable<T> { if (a.CompareTo(b) < 0) { a = b; return true; } return false; }
    bool chmin<T>(ref T a, T b) where T : IComparable<T> { if (b.CompareTo(a) < 0) { a = b; return true; } return false; }

    void Calc()
    {
        cin = new Scanner();

        int H = cin.nextInt();
        int W = cin.nextInt();

        char[][] grid = new char[H][];

        int indexH = 0;

        for (int i = 0; i < H; ++i)
        {
            string str = cin.next();
            if (str.IndexOf('#', 0, W) != -1)
            {
                grid[indexH] = str.ToCharArray();
                indexH++;
            }
        }

        char[][] gridAns = new char[indexH][];

        int indexW = 0;

        for (int j = 0; j < indexH; ++j)
        {
            gridAns[j] = new char[W];
        }

        for (int i = 0; i < W; ++i)
        {
            bool allWhite = true;

            for (int j = 0; j < indexH; ++j)
            {
                if (grid[j][i] == '#')
                {
                    allWhite = false;
                    break;
                }
            }

            if (!allWhite)
            {
                for (int j = 0; j < indexH; ++j)
                {
                    gridAns[j][indexW] = grid[j][i];
                }
                indexW++;
            }
        }

        for (int i = 0; i < indexH; ++i)
        {
            for (int j = 0; j < indexW; ++j)
            {
                Write(gridAns[i][j].ToString());
            }
            Write("\n");

            //WriteLine(new string(gridAns[i]));
        }
    }
}

public static class StringExtension
{
    public static char GetChar1(this string str, int indexOneBase)
    {
        return str[indexOneBase - 1];
    }
}

class Scanner
{
    string[] s;
    int i;

    char[] cs = new char[] { ' ' };

    public Scanner()
    {
        s = new string[0];
        i = 0;
    }

    public string next()
    {
        if (i < s.Length) return s[i++];
        string st = Console.ReadLine();
        while (st == "") st = Console.ReadLine();
        s = st.Split(cs, StringSplitOptions.RemoveEmptyEntries);
        if (s.Length == 0) return next();
        i = 0;
        return s[i++];
    }

    public int nextInt()
    {
        return int.Parse(next());
    }
    public int[] ArrayInt(int N, int add = 0)
    {
        int[] Array = new int[N];
        for (int i = 0; i < N; i++)
        {
            Array[i] = nextInt() + add;
        }
        return Array;
    }

    public long nextLong()
    {
        return long.Parse(next());
    }

    public long[] ArrayLong(int N, long add = 0)
    {
        long[] Array = new long[N];
        for (int i = 0; i < N; i++)
        {
            Array[i] = nextLong() + add;
        }
        return Array;
    }

    public double nextDouble()
    {
        return double.Parse(next());
    }


    public double[] ArrayDouble(int N, double add = 0)
    {
        double[] Array = new double[N];
        for (int i = 0; i < N; i++)
        {
            Array[i] = nextDouble() + add;
        }
        return Array;
    }
}


Measured memory_bytes: 13268