I would have liked making arm 2 a bi-arm so that I could have one of each. Alas.

I was not able to find a layout with only 3 arms to even approach an 11. Feels like dividing the crystal into 2 equal halves and flipping one half to reuse the output arms is the sauce here, but I couldn't get anything working other than this. Frankly, I feel lucky that I was able to reuse arm 4 when arm 3 couldn't output 3 products.