//  [go]
package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
	"strings"
)

type TupleInt struct {
	first  int
	second int
}

func main() {
	sc := NewScanner()
	H, W, K := sc.NextInt(), sc.NextInt(), sc.NextInt()
	s := make([]string, H)
	cherry := make([]TupleInt, 0, K)
	ans := make([][]int, H)
	for i := 0; i < H; i++ {
		ans[i] = make([]int, W)
	}

	group := 1
	for i := 0; i < H; i++ {
		s[i] = sc.NextLine()
		for j, c := range s[i] {
			if c == '#' {
				cherry = append(cherry, TupleInt{
					first:  i,
					second: j,
				})
				ans[i][j] = group
				group++
			}
		}
	}
	group = 1
	for i := 0; i < H; i++ {
		for j := 0; j < W; j++ {
			if ans[i][j] > 0 {
				//fmt.Println(i, j, ans[i][j])
				for j2 := j - 1; j2 >= 0; j2-- {
					if ans[i][j2] == 0 {
						ans[i][j2] = ans[i][j]
					} else {
						break
					}
				}

				for j2 := j + 1; j2 < W; j2++ {
					if ans[i][j2] == 0 {
						ans[i][j2] = ans[i][j]
					} else {
						break
					}
				}
			}
		}
	}

	for i := 0; i < H; i++ {
		for j := 0; j < W; j++ {
			if ans[i][j] == 0 {
				for i2 := i - 1; i2 >= 0; i2-- {
					if ans[i2][j] != 0 {
						for i3 := i; i3 >= i2; i3-- {
							ans[i3][j] = ans[i2][j]
						}
						break
					}
				}
				for i2 := i; i2 < H; i2++ {
					if ans[i2][j] != 0 {
						for i3 := i; i3 <= i2; i3++ {
							ans[i3][j] = ans[i2][j]
						}
						break
					}
				}
			}
		}
	}
	for i := 0; i < H; i++ {
		PrintI(ans[i]...)
	}
}

func mapToString(arr []int) []string {
	ret := make([]string, len(arr))
	for i := 0; i < len(arr); i++ {
		ret[i] = strconv.Itoa(arr[i])
	}
	return ret
}

func PrintI(args ...int) {
	fmt.Println(strings.Join(mapToString(args), " "))
}

type Scanner struct {
	r   *bufio.Reader
	buf []byte
	p   int
}

func NewScanner() *Scanner {
	rdr := bufio.NewReaderSize(os.Stdin, 1000)
	return &Scanner{r: rdr}
}
func (s *Scanner) Next() string {
	s.pre()
	start := s.p
	for ; s.p < len(s.buf); s.p++ {
		if s.buf[s.p] == ' ' {
			break
		}
	}
	result := string(s.buf[start:s.p])
	s.p++
	return result
}
func (s *Scanner) NextLine() string {
	s.pre()
	start := s.p
	s.p = len(s.buf)
	return string(s.buf[start:])
}
func (s *Scanner) NextInt() int {
	v, _ := strconv.Atoi(s.Next())
	return v
}
func (s *Scanner) NextInt64() int64 {
	v, _ := strconv.ParseInt(s.Next(), 10, 64)
	return v
}

func (s *Scanner) NextFloat() float64 {
	v, _ := strconv.ParseFloat(s.Next(), 64)
	return v
}

func (s *Scanner) NextIntArray() []int {
	s.pre()
	start := s.p
	result := []int{}
	for ; s.p < len(s.buf)+1; s.p++ {
		if s.p == len(s.buf) || s.buf[s.p] == ' ' {
			v, _ := strconv.ParseInt(string(s.buf[start:s.p]), 10, 0)
			result = append(result, int(v))
			start = s.p + 1
		}
	}

	return result
}
func (s *Scanner) NextInt64Array() []int64 {
	s.pre()
	start := s.p
	result := []int64{}
	for ; s.p < len(s.buf)+1; s.p++ {
		if s.p == len(s.buf) || s.buf[s.p] == ' ' {
			v, _ := strconv.ParseInt(string(s.buf[start:s.p]), 10, 64)
			result = append(result, v)
			start = s.p + 1
		}
	}
	return result
}

func (s *Scanner) NextMap() map[int]bool {
	s.pre()
	start := s.p
	mp := map[int]bool{}
	for ; s.p < len(s.buf); s.p++ {
		if s.buf[s.p] == ' ' {
			v, _ := strconv.Atoi(string(s.buf[start:s.p]))
			mp[v] = true
			start = s.p + 1
		}
	}
	v, _ := strconv.Atoi(string(s.buf[start:s.p]))
	mp[v] = true

	return mp
}

func (s *Scanner) pre() {
	if s.p >= len(s.buf) {
		s.readLine()
		s.p = 0
	}
}
func (s *Scanner) readLine() {
	s.buf = make([]byte, 0)
	for {
		l, p, e := s.r.ReadLine()
		if e != nil {
			panic(e)
		}
		s.buf = append(s.buf, l...)
		if !p {
			break
		}
	}
}