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

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

    if w < 6 {
        for s in s {
            println!("{}", s.iter().collect::<String>());
        }
        return;
    }

    for i in 0..h {
        let mut j = 0;
        while j + 5 < w {
            if &s[i][j..j + 6] == &['y', 'i', 'w', 'i', 'y', '9'] {
                s[i][j + 4] = 'Y';
                j += 6
            } else if &s[i][j..j + 6] == &['9', 'y', 'i', 'w', 'i', 'y'] {
                s[i][j + 1] = 'Y';
                j += 6
            } else {
                j += 1;
            }
        }
        println!("{}", s[i].iter().collect::<String>());
    }
}