#![allow(unused_imports, unused_macros, dead_code)]

macro_rules! min {
    (.. $x:expr) => {{
        let mut it = $x.iter();
        it.next().map(|z| it.fold(z, |x, y| min!(x, y)))
    }};
    ($x:expr) => ($x);
    ($x:expr, $($ys:expr),*) => {{
        let t = min!($($ys),*);
        if $x < t { $x } else { t }
    }}
}
macro_rules! max {
    (.. $x:expr) => {{
        let mut it = $x.iter();
        it.next().map(|z| it.fold(z, |x, y| max!(x, y)))
    }};
    ($x:expr) => ($x);
    ($x:expr, $($ys:expr),*) => {{
        let t = max!($($ys),*);
        if $x > t { $x } else { t }
    }}
}


macro_rules! ewriteln {
    ($($args:expr),*) => { let _ = writeln!(&mut std::io::stderr(), $($args),*); };
}
macro_rules! trace {
    ($x:expr) => { ewriteln!(">>> {} = {:?}", stringify!($x), $x) };
    ($($xs:expr),*) => { trace!(($($xs),*)) }
}
macro_rules! put {
    (.. $x:expr) => {{
        let mut it = $x.iter();
        if let Some(x) = it.next() { print!("{}", x); }
        for x in it { print!(" {}", x); }
        println!("");
    }};
    ($x:expr) => { println!("{}", $x) };
    ($x:expr, $($xs:expr),*) => { print!("{} ", $x); put!($($xs),*) }
}

const M: i64 = 1_000_000_007;

fn main() {
    let mut sc = Scanner::new();
    let h: usize = sc.cin();
    let w: usize = sc.cin();
    let k: usize = sc.cin();
    let mut f = vec![vec![0; w]; h];
    let mut r = vec![0; h];
    for i in 0..h {
        let s: String = sc.cin();
        let cs: Vec<char> = s.chars().collect();
        for j in 0..w {
            f[i][j] = if cs[j] == '#' {
                1
            } else {
                0
            };
            r[i] += f[i][j];
        }
    }
    let mut g = vec![vec![0; w]; h];

    let mut rows = vec![];
    {
        for i in 0..h {
            if r[i] > 0 {
                rows.push(i);
            }
        }
    }
    // trace!(&rows);
    let mut id = 1;

    let mut top = 0;
    for i in 0..rows.len() {
        let bottom = if i < rows.len() - 1 {
            rows[i]
        } else {
            h - 1
        };

        let mut cols = vec![];
        for j in 0..w {
            let x: usize = (top..bottom+1).map(|i| f[i][j]).sum();
            if x > 0 {
                cols.push(j);
            }
        }
        // trace!(top, bottom);
        // trace!(&cols);
        let mut left = 0;
        for j in 0..cols.len() {
            let right = if j < cols.len() - 1 {
                cols[j]
            } else {
                w - 1
            };
            // trace!((left, right), (top, bottom));
            for ii in top..bottom+1 {
                for jj in left..right+1 {
                    f[ii][jj] = id;
                }
            }
            id += 1;
            left = right + 1;
        }

        top = bottom + 1;
    }

    for i in 0..h {
        put!(..f[i]);
    }

}

use std::io::{self, Write};
use std::str::FromStr;
use std::collections::VecDeque;

struct Scanner { stdin: io::Stdin, buffer: VecDeque<String>, }
impl Scanner {
    fn new() -> Self { Scanner { stdin: io::stdin(), buffer: VecDeque::new() } }
    fn cin<T: FromStr>(&mut self) -> T {
        while self.buffer.len() == 0 {
            let mut line = String::new();
            let _ = self.stdin.read_line(&mut line);
            for w in line.split_whitespace() {
                self.buffer.push_back(String::from(w));
            }
        }
        self.buffer.pop_front().unwrap().parse::<T>().ok().unwrap()
    }
    fn chars(&mut self) -> Vec<char> { self.cin::<String>().chars().collect() }
    fn vec<T: FromStr>(&mut self, n: usize) -> Vec<T> { (0..n).map(|_| self.cin()).collect() }
}


Measured memory_bytes: 4860