Found it on the other thread. You can give this a go:
iex> Enum.zip [[1,2],[3,4],[5,6]] [{1, 3, 5}, {2, 4, 6}]
iex> Enum.zip([[1,2],[3,4],[5,6]]) |> Enum.map(&Tuple.to_list/1) [[1, 3, 5], [2, 4, 6]]