use itertools::Itertools;
use proconio::input;

fn main() {
    input! {
        n:usize,
        m:usize,
        k:usize,
    }
    let mut ans = vec![vec![0; n]; n];
    if m > k * k {
        println!("-1");
    } else {
        for i in 0..n {
            for j in 0..n {
                ans[i][j] = (j + i * k) % m + 1;
            }
        }
        for r in ans {
            println!("{}", r.iter().join(" "));
        }
    }
}