I would like each of you to make an enlarged copy of Fig. 1.2 from the booklet and then write in each of your pure colors (use a pencil). Here's and example:
You can see I've put the ones with high chroma on the circumference and the ones with low chroma closer to the center. I would suggest you add the Notation for the highest DOS of each dye on the sheet too. I think this will help you with your selection of principal and secondary dyes. There are 12 colors here, black would be in the center. We really are only working with 7 principal colors for the color wheel.
I think this can help, let me know what you think.