It is important to read & study the work by Baer & Strack
Diqduqe Hateamim, but also to be a little bit careful.
For some reason Baer was sometimes
too creative. Let's see for example page 20, section 19
and the corrections by Strack :
"These are the 'kings', [qamats], [patah], [sere],
[seghol], [holam], [shurek],[hirik], [hataf and qamats],
[hataf and patah], and so too the schewa
if it comes at the beginning of a word will be counted
as a 'king' but if it comes at the middle or its
end, shall not."
Nachträge/Supplement by Strack: Der Abschnitt lautet in D.../The section
reads in D:
These are the 'kings', qamats, patah, sere, seghol, holam, hirik.
And so too the schewa if it comes at the beginning of a word will
be counted as a 'king' but if it comes at the middle or its
end will be counted as a 'servant' [mesharet]
> the specific case of vayomru...
...and other words is also a matter of tradition. We have different
traditions. For example see Deut 1:27 (the first word);
some editions -- there's a gaya under the letter resh; under the gimmel
— sheva na. Based on the Yemenite tradition the gaya is under the letter
tav; under the gimmel — sheva nach!
Best,
David Hamuel
Type Designer
Biblical Hebrew, Grammar & Cantillation Expert