I think I got it all, feeling a bit dizzy now...
I can't help but thinking there must be a better way to structure the data but I have nothing intelligent to add right now.
Many of these formulas are array formulas, they have to be entered with Ctrl + Shift + Enter. You'll recognice them by the curly brackets {} surrounding them. The brackets can not be added manually, they show up automatically when you enter the formula with Ctrl + Shift + Enter.
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