#[allow(unused)]
use proconio::{input, marker::Chars};

fn main() {
    input! {
        s: String,
        b:[Chars; 8],
    }
    let mut player = vec![s.clone()];
    if s == "yukiko" {
        player.push(String::from("oda"));
    } else {
        player.push(String::from("yukiko"));
    }
    let mut cnt = 0;
    for i in 0..8 {
        let mut l = 9;
        let mut r = 0;
        for j in 0..8 {
            if b[i][j] == 'w' || b[i][j] == 'b' {
                l = l.min(j);
                r = r.max(j);
            }
        }
        if l < 9 {
            cnt += r - l + 1;
        }
    }
    println!("{}", player[cnt % 2])
}