Chord name exceptions

[Nandi]

I would like to have a predefined \hungarianChords command, which is
based on the \germanChords (H instead of B, uppercase sharp and flat
symbols), but which keeps the default setting E/D instead of E/d.  Also,
I'd need altered chords (es, fis etc.) to end in Hungarian "sz" like this:
esz, fisz etc., starting with capital letters in such cases like D/Fisz etc.
(or have the uppercase sharp/flat symbols).
I've read through the documentation about chordNameExceptions and
chordRootNamer, but couldn't figure out, how to achieve the desired changes.
Any help, please? Thanks in advance:
Nandi