the comparison of sh and ch

[ReneZ]

I've already read a few of your posts, I will take the time in the next few days to read more of your posts.

one more question
how do you see the possibility that the gallow signs and letters like y,d,r,qo,o  could be standing in front of letters of the root word stem but do not belong to the base word itself? or sometimes with both in succession (gallow sign and letter), e.g. ot, yt, ok, ak, op, qot ... (as I have inserted it in red in my first text above)

I specifically meant some of my comments in You are not allowed to view links. Register or Login to view..

On the other question, just to be clear: I do not have any answers that would convince myself. For every thought I can see problems with it.

Generally, I don't think of stems, prefixes and suffixes in the grammatical sense. One can use these terms for word fragments that tend to appear near the start, in the middle or near the end. Still, there are characters that are happy to be both at the start and at the end, like y , l , r .

For me, this is all part of a single system. 
Most importantly, I am not convinced of the most generally applied asumption, namely that the words that we see in the MS are whole words in the grammatical sense. I am not saying that they are not. Just saying that they may not be.