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

fn solve(n: usize, k: usize) -> Option<Vec<Vec<usize>>> {
    (k > 0).then(|| {
        (n * n - k + 1..=n * n)
            .chain(1..=n * n - k)
            .chunks(n)
            .into_iter()
            .map(|c| c.collect())
            .collect()
    })
}

fn main() {
    input! {
        n: usize,
        k: usize,
    }

    if let Some(ans) = solve(n, k) {
        for row in ans {
            println!("{}", row.iter().join(" "));
        }
    } else {
        println!("-1");
    }
}