import java.io.IOException;
import java.io.InputStream;
import java.util.Arrays;
import java.util.NoSuchElementException;
import java.util.Scanner;
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());}
}
public class Main {
	static FastScanner scan=new FastScanner();
	static Scanner scanner=new Scanner(System.in);
	static long gcd (long a, long b) {return b>0?gcd(b,a%b):a;}
	static long lcm (long a, long b) {return a*b/gcd(a,b);}
	static int max(int a,int b) {return a>b?a:b;}
	static int min(int a,int b) {return a<b?a:b;}
	static long factorial(int i) {return i==1?1:i*factorial(i-1);}
	static int lower_bound(int a[],int key) {
		int low=0,high=a.length;
		while(low<high) {
			int mid=((high-low)/2)+low;
			if(a[mid]<=key)low=mid+1;
			else high=mid;
		}
		return high;
	}
	static int upper_bound(int a[],int key) {
		int low=0,high=a.length;
		while(low<high) {
			int mid=((high-low)/2)+low;
			if(a[mid]<key)low=mid+1;
			else high=mid;
		}
		return high;
	}
	static boolean isPrime (long n) {
		if (n==2) return true;
		if (n<2 || n%2==0) return false;
		double d = Math.sqrt(n);
		for (int i=3; i<=d; i+=2)if(n%i==0){return false;}
		return true;
	}
	static int upper_division(int a,int b) {//切り上げ(int)
		if(a%b==0) {
			return a/b;
		}
		else {
			return a/b+1;
		}
	}
	static long lupper_division(long a,long b) {//切り上げ(long)
		if(a%b==0) {
			return a/b;
		}
		else {
			return a/b+1;
		}
	}
	static long lmax(long a,long b) {return Math.max(a, b);}
	static long lmin(long a,long b) {return Math.min(a, b);}
	static int[] setArray(int a) {//配列を作る
		int b[]=new int[a];
		for(int i=0;i<a;i++) {
			b[i]=scan.nextInt();
		}
		return b;
	}
	static String reverce(String str) {//文字列を逆にする
		String strr="";
		for(int i=str.length()-1;i>=0;i--) {
			strr+=str.charAt(i);
		}
		return strr;
	}
	public static void printArray(boolean[] visited2) {//配列の空白付き出力
		for(int i=0;i<visited2.length-1;i++) {
			System.out.print(visited2[i]+" ");
		}
		System.out.println(visited2[visited2.length-1]);
	}
	public static int[][] doublesort(int[][]a) {//二次元配列のソート
		Arrays.sort(a,(x,y)->Integer.compare(x[0],y[0]));
		return a;
	}
	static long modpow(long x,long n,long mo) {//x^n%mo
		long sum=1;
		while(n>0) {
			if((n&1)==1) {
				sum=sum*x%mo;
			}
			x=x*x%mo;
			n>>=1;
		}
		return sum;
	}
	public char[] revch(char ch[]) {//char[]を逆にする
		char ret[]=new char[ch.length];
		for(int i=ch.length-1,j=0;i>=0;i--,j++) {
			ret[j]=ch[i];
		}
		return ret;
	}
    public int[] revint(int ch[]) {//int[]を逆にする
		int ret[]=new int[ch.length];
		for(int i=ch.length-1,j=0;i>=0;i--,j++) {
			ret[j]=ch[i];
		}
		return ret;
	}
	public static void main(String[] args) {
		int H=scan.nextInt();
		int W=scan.nextInt();
		int K=scan.nextInt();
		char s[][]=new char[H][W];
		int A[][]=new int[K][2];
		int map[][]=new int[H][W];
		boolean h[]=new boolean[H];
		int z=0;
		for(int i=0;i<H;i++){
			String a=scan.next();
			for(int j=0;j<W;j++){
				s[i][j]=a.charAt(j);
				if(s[i][j]=='#'){
					h[i]=true;
					A[z][0]=i;
					A[z][1]=j;
					z++;
				}
			}
		}
		for(int i=0;i<K;i++){
			int u=A[i][0],d=u,l=A[i][1],r=l;
			map[u][l]=i+1;
			boolean uk=false,dk=false,rk=false,lk=false;
			while(true){
				if(u!=0&&h[u-1]==false){
					u--;uk=true;
				}
				if(d!=H-1&&h[d+1]==false){
					d++;dk=true;
				}
				for(int j=l;j<=r;j++){
					if(uk)
						if(map[u][j]!=0){
							u++;uk=false;
						}
					if(dk)
						if(map[d][j]!=0){
							d--;dk=false;
						}
				}
				if(r!=W-1){
					r++;rk=true;
				}
				if(l!=0){
					l--;lk=true;
				}
				for(int j=u;j<=d;j++){
					if(rk)
						if(map[j][r]!=0||s[j][r]=='#'){
							r--;rk=false;
						}
					if(lk)
						if(map[j][l]!=0||s[j][l]=='#'){
							l++;lk=false;
						}
				}
				if(rk==false&&lk==false&&uk==false&&dk==false){
					for(int j=u;j<=d;j++){
						for(int k=l;k<=r;k++){
							map[j][k]=i+1;
						}
					}
					break;
				}
				rk=false;lk=false;uk=false;dk=false;
			}
		}
		for(int i=0;i<H;i++){
			for(int j=0;j<W;j++){
				System.out.println(map[i][j]);
			}
		}
	}
}

Measured memory_bytes: 48632