fn main() {
    let mut nh = String::new();
    std::io::stdin().read_line(&mut nh).ok();
    let nh: Vec<usize> = nh.trim().split_whitespace().map(|s| s.parse().unwrap()).collect();
    let n = nh[0];
    let h = nh[1];

    let mut factors = vec![];
    for i in 1..n {
        if n % i == 0 {
            factors.push(i);
        }
    }
    if n / h <= 2 || h <= 2  {
        if h == 1 {
            println!("{}", factors.iter().flat_map(|&i| (0..i).map(|_| i.to_string()).collect::<Vec<String>>()).collect::<Vec<String>>().join(" "));
        } else if h == 2{
            let val = factors.pop().unwrap();
            println!("{}", (0..val).map(|_| val.to_string()).collect::<Vec<String>>().join(" "));
            println!("{}", factors.iter().flat_map(|&i| (0..i).map(|_| i.to_string()).collect::<Vec<String>>()).collect::<Vec<String>>().join(" "));
        } else if n / h == 1 {
            for i in 0..factors.len() {
                for j in 0..factors[i] {
                    println!("{}", factors[i]);
                }
            }
        } else {
            let val = factors.pop().unwrap();
            for i in 0..factors.len() {
                for j in 0..factors[i] {
                    println!("{} {}", val, factors[i]);
                }
            }
        }
    } else {
        println!("-1");
    }
}