Is your feature request related to a problem? Please describe.

The normalization feature for unicode characters takes priority over symbols in the symbols.dic file. This leads to e.g. following problems

• When normalization is on, superscript and subscript characters are not reported as such anymore, they are part of the symbols.dic file though
• Characters like ′ (prime), ″ (double prime) or ‴ (triple prime) are all read as "prime" when normalization is on, although they are aproperly added to symbols.dic file.
• Possibly other characters of the symbols.dic file are impacted.
  So many characters are now reported in math equations, but not with the symbols.dic pronounciation.

Describe the solution you'd like

Exclude always symbols added to symbols.dic file from normalization.

Describe alternatives you've considered

None

Additional context

None