#![allow(unused_imports)]
use itertools::*;
use proconio::{input, marker::*};

fn distance(i1: usize, j1: usize, i2: usize, j2: usize) -> i64 {
    (i1.abs_diff(i2) + j1.abs_diff(j2)) as i64
}

fn main() {
    input! {
        n: usize,
        k: i64,
        sr: Usize1,
        sc: Usize1,
        tr: Usize1,
        tc: Usize1,
    }

    let dist_min = distance(sr, sc, tr, tc);
    let dist_max = if dist_min % 2 == 0 {
        2 * dist_min
    } else {
        2 * dist_min - 1
    };
    if dist_min > k || (k - dist_min) % 2 != 0 || k > dist_max {
        println!("-1");
        return;
    }

    let mut ans = vec![vec!['.'; n]; n];
    let limit = k - dist_min - 1;
    for (i, j) in iproduct!(0..n, 0..n) {
        let d = distance(sr, sc, i, j);
        if d % 2 == 1 && d <= limit {
            ans[i][j] = '#';
        }
    }

    for row in ans {
        println!("{}", row.iter().join(""));
    }
}