use proconio::{input, marker::Chars};

fn main() {
    input! {
        h: usize,
        w: usize,
        mut s: [Chars; h],
    }

    for i in 0..h {
        for j in 0..w {
            if s[i][j] == 'y' {
                if j > 0 && s[i][j - 1] == '9' {
                    s[i][j] = 'Y'
                }
                if j < w - 1 && s[i][j + 1] == '9' {
                    s[i][j] = 'Y'
                }
            }
        }
    }

    println!(
        "{}",
        s.iter()
            .map(|x| x.iter().collect::<String>())
            .collect::<Vec<_>>()
            .join("\n")
    );
}