The c9-derived suffix

[Bluetoes101]

Curious what the general sense is about the 9 character is around here, like whether it likely has a distinct phonological value or if its merely some orthographically fixed spelling convention.

From my research I found that 9 (EVA: y) has a couple of traits. 

1. It will often start or end words, but is much rarer to find in the middle. 

The next point is a bit abstract so I will use an image. 

   


2. You generally won't find it interacting with "i" (or "a"). 
Glyphs with the building block of "i" (noted in image) you will tend to not find it being a precursor for. 
However in the cases it is, these tend to be in the final half of lines or predominantly. 
It is less rare following on from some of these glyphs, however they will still tend to be in the final half of lines or predominantly.

3. In bulk text "y" seems to be a common precursor to a "gallows glyph" (pfkt) and d. 
4. At the starts of lines "y" can be a common precursor to "sh" and "ch", but very rarely away from the start of a line. 

I'm not one for stats, but if you use the site Koen linked you can check for yourself. 
The stats guys will also pull me up if I have taken a misstep here  , but I think I'm safe (hopefully!)

My "general sense" is that it mostly a precursor for "pfktd" unless "sh,ch" which tend to be glued to the starts of lines.
I'd also note that is rarely found as a precursor for "cXh" glyphs, with X being "pfkt". 

Also take care with the website linked, there's a fair few possible spaces in words which are taken as whole words as well as a fair few mistakes/errors. It's good overall but just double check

Edit - Just noticed this is asking about it as a suffix.. sorry! hopefully some of it is useful anyway.