This is what the OP needed, I think.
Except that instead of the u} form this is the gerund form.
So I don't think it is the answer, either.

   2 4 [`(0 1"_)`]} 3 2$0
2 4
2 4
0 0


On Tue, Dec 27, 2016 at 2:09 PM, Henry Rich <[email protected]> wrote:

> I have removed the deprecation - it was my misunderstanding of something
> Roger wrote.
>
> The gerund form would be, in simplest form,
>
> 2 4 [`0:`]} 3 2$0
>
> --
(B=)
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