Awesome TTS configuration

Hello,
I’m struggling trying to configure Awesome TTS and would appreciate some help. I would like the addon not to record certain words or signs. Let me explain. For example, if leter ‘f’ is alone it means for me that the word is feminine. Thus I would like the addon not to record and then read this ‘f’ letter that accompanies my note. However, I managed only to configure the program the way that it would remove all ‘f’ letters in a note, regarding whether it is alone or within a word. For instance, it won’t read ‘Female’ but ‘emale’. I would also like the addon not to record all text that is within brackets []. Thank you for your time.