use proconio::{input, marker::Usize1};

fn main() {
    input! {
        n: usize,
        k: usize,
        s: (Usize1, Usize1),
        t: (Usize1, Usize1),
    }
    let mn = s.0.abs_diff(t.0) + s.1.abs_diff(t.1);
    let mx = mn * 2;
    if mn <= k && k <= mx && (k - mn) % 2 == 0 {
        let r = k - mn;
        let mut ans = vec![vec!['.'; n]; n];
        for i in 0..n {
            for j in 0..n {
                if i.abs_diff(s.0) + j.abs_diff(s.1) <= r && (s.0 + s.1) % 2 != (i + j) % 2 {
                    ans[i][j] = '#';
                }
            }
        }
        for r in ans {
            println!("{}", r.iter().collect::<String>());
        }
    } else {
        println!("-1");
    }
}