New to Twine - Making a click for each array element

Greetings,

I've recently started using Twine 2 Harlowe and I'm having a blast! Such a great engine! But I cannot understand how to make the final feature to my first project.

The thing I'm working on is a deck manipulating assistant. I have several decks of cards, described as arrays with text elements:

(set: $deck1 to (a: "cardtext1","cardtext2"...)
(set: $deck2 to (a: "cardtext1","cardtext2"...)
(set: $deck3 to (a: "cardtext1","cardtext2"...)

These are put into an empty passage and loaded on the first passage with the help of

(display: "passagewitharrays")

The cards are usually manipulated this way:

(set: $t to (either:...$deck1))
(set: $deck1 to $deck1 - (a: $t))
(print: $t)

And I move this card to discard pile on click

(set: $discardofdeck1 to  $discardofdeck1 +  (a: $t))

But sometimes I need to pin the card, so I move it to $pinned array.

So, the question is:

How can I later move any of the elements from $pinned to any discard array?

I can show all the elements of $pinned, but how can I make a click button for each of these elements, so that I can move one of them to another array? I was thinking of trying to make some sort of a loop for $pinned's length, but not sure how to and whether it is worth it.

Thank you in advance!