Trouble with grouping wall elements and concatenate text

Hi Dynamo Gurus,

Coming from grasshopper being still pretty foreign with dynamo nodes, I’m having trouble with re-organising & group elements within the lists and match up with the D numbers that associates with the elements. Then I would like to concatenate the D numbers together for the same element ID, for instance D1/ D2

It would be tremendous help if anyone’s able to shed some light. Thanks in advance!

@shkattii Try something like this

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Worked like magic, cheers mate

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