Lines interrupted by drawings

[Davidsch]

Thank you Marco.

There are several approaches, and what you did here covers a fraction of what I researched, and it's still fun to exchange thoughts.

Yes I agree that the S is always a stand-alone character (free floating symbol). 
The -g symbol, does not seem to be a real char. to me (based on form & context), so that symbol that not exist in my book.
The -m is indeed also an abbrev. which can be easily proven based on the context.

I suspect the [am] is the highest form of abbreviation. A lower form could be stand for [ail] or [aiin], [ain] which both are related to each other.
It seems to me that the word in a sentence morphs towards a longer form sometimes, and then suddenly collapses into a more abbreviated form.