Combine Door Mark & Revit Link Mark / Transpose List to Sublists?

I have a project with multiple instances of a link, and door scheduling is a pain. I’m trying to combine Revit Link Mark (in my case it is a unit number) with the door mark. The goal is to have a the Unit Number (revit link mark) as a prefix for the door mark. Any thoughts?

The way I have it set up, the ‘0 List’ under doors corresponds with ‘item 0’ on the Revit Links list (and ‘1 list’ with item 1, etc.) , so I thought perhaps I could transpose item 0 (101) to all items in list 0, etc. I can technically combine these numbers in schedules but it causes issues with sorting. I am very new to Dynamo so any and all help is much appreciated!

Do you want like this?

・Note: Type Object of value get from Mark is “String”

Yes, this worked. Thank you!