You might remember this thing. The palette I use in Photoshop that took me years to figure out. It's Cyan, Magenta and Yellow combinations in 25% increments and this is the best way I could figure out of how to generate all the possible combinations of the inks that the printing process uses to make colours.
I've uploaded this as a Photoshop ACO file so you can download it and use it yourself if you want it. But only for 7 days from now. I guess I can always repeat the process in the future if anyone's that interested in it... Link below... https://www.hightail.com/download/UlRUaXREQzdwaFJESjlVag?cid=tx-02002207340200000000&s=19102