n, k = io.read("*n", "*n")
if n % k ~= 0 then
  print(-1) os.exit()
end
if k == 1 then
  if n == 1 then
    print(-1)
    os.exit()
  end
end
m = math.floor(n / k)
t = {}
for i = 1, m do
  t[i] = 1
end
for i = m + 1, n do
  t[i] = 2
end
print(table.concat(t, " "))