Spyderco Delica 4 (ZDP-189 Blade)

I got this 2 years ago and just got an email from massdrop/drop asking me to comment?

From what I can gather, C11 is a Delica 4. P is plain edge, S is Spyderedge, PS is combo edge. F is flat ground. No letter before the edge grind is hollow grind. BK, BL, GR, etc are standard color codes. No color code is stainless. Not sure what titanium and G10 would be. The Wharncliffe one I want is something like C11FPWCBK. This lacks the F and has a 3 character color code (granted it‘s a special colored scale), but the code on my box does include a blade grind, despite no serrated option in ZDP-189, so outside of the VG10 models, it looks like it gets a little sketchy in the coding.

I have seen the model referred to both ways. I think the "P " means the plain edge version as opposed to the Spyderedge(Serrated) or combo edge. Leaving the letter out would refer to it generally. That is my assumption anyway