class Integer
  def divisor_list
    require 'prime'

    return [] if self <= 0
    return [1] if self == 1

    prime_division.map.with_index { |(base, k), i|
      s = i.zero? ? 0 : 1
      (s..k).map { |n| base ** n }
    }.inject { |res, e| res + res.flat_map { |t| e.map { |v| t * v } } }.sort
  end
end

N, H = gets.split.map(&:to_i)

if N % H != 0
  puts -1
  exit
end

W = N / H
ans = Array.new(H) { Array.new(N / H, 0) }
y = 0
x = 0

N.divisor_list.reverse_each do |v|
  next if v == N
  h = v / W
  w = v % W

  if h > 0
    y.upto(y + h - 1) do |cy|
      0.upto(W - 1) do |cx|
        ans[cy][cx] = v
      end
    end
  else
    w.times do
      ans[y][x] = v
      x += 1
    end
  end

  if h > 0
    y += h
    x = 0
  end
end

puts ans.map { |row| row.join(' ') }