using System;
using System.Text;

public class Program
{
    private int H, W, K;
    private char[][] S;

    public void Solve()
    {
        var sc = new Scanner();
        H = sc.NextInt();
        W = sc.NextInt();
        K = sc.NextInt();
        S = new char[H][];
        for (int i = 0; i < H; i++)
        {
            S[i] = sc.Next().ToCharArray();
        }

        int[][] ans = new int[H][];
        for (int i = 0; i < H; i++)
        {
            ans[i] = new int[W];
        }

        int c = 1;
        for (int i = 0; i < H; i++)
        {
            bool f = false;
            for (int j = 0; j < W; j++)
            {
                if (S[i][j] == '#')
                {
                    f = true;
                    break;
                }
            }

            if (!f) continue;

            int b = 0;

            for (int j = 0; j < W; j++)
            {
                ans[i][j] = c;
                if (S[i][j] == '#')
                {
                    c++;
                    b = j;
                }
            }

            for (int j = b; j < W; j++)
            {
                ans[i][j] = c - 1;
            }
        }

        for (int j = 0; j < W; j++)
        {
            int b = 0;
            for (int i = 0; i < H; i++)
            {
                if (ans[i][j] != 0)
                {
                    for (int k = b; k < i; k++)
                    {
                        ans[k][j] = ans[i][j];
                    }

                    b = i + 1;
                }
            }

            for (int k = b; k < H; k++)
            {
                ans[k][j] = ans[b - 1][j];
            }
        }

        var sb = new StringBuilder();
        for (int i = 0; i < H; i++)
        {
            sb.AppendLine(string.Join(" ", ans[i]));
        }
        Console.Write(sb.ToString());
    }

    public static void Main(string[] args)
    {
        new Program().Solve();
    }
}

class Scanner
{
    public Scanner()
    {
        _pos = 0;
        _line = new string[0];
    }

    const char Separator = ' ';
    private int _pos;
    private string[] _line;

    #region スペース区切りで取得

    public string Next()
    {
        if (_pos >= _line.Length)
        {
            _line = Console.ReadLine().Split(Separator);
            _pos = 0;
        }

        return _line[_pos++];
    }

    public int NextInt()
    {
        return int.Parse(Next());
    }

    public long NextLong()
    {
        return long.Parse(Next());
    }

    public double NextDouble()
    {
        return double.Parse(Next());
    }

    #endregion

    #region 型変換

    private int[] ToIntArray(string[] array)
    {
        var result = new int[array.Length];
        for (int i = 0; i < array.Length; i++)
        {
            result[i] = int.Parse(array[i]);
        }

        return result;
    }

    private long[] ToLongArray(string[] array)
    {
        var result = new long[array.Length];
        for (int i = 0; i < array.Length; i++)
        {
            result[i] = long.Parse(array[i]);
        }

        return result;
    }

    private double[] ToDoubleArray(string[] array)
    {
        var result = new double[array.Length];
        for (int i = 0; i < array.Length; i++)
        {
            result[i] = double.Parse(array[i]);
        }

        return result;
    }

    #endregion

    #region 配列取得

    public string[] Array()
    {
        if (_pos >= _line.Length)
            _line = Console.ReadLine().Split(Separator);

        _pos = _line.Length;
        return _line;
    }

    public int[] IntArray()
    {
        return ToIntArray(Array());
    }

    public long[] LongArray()
    {
        return ToLongArray(Array());
    }

    public double[] DoubleArray()
    {
        return ToDoubleArray(Array());
    }

    #endregion
}

Measured memory_bytes: 19676