Rikka breaths

What are Rikka’s options for breathing?

I know the install comes with the exVoice folder. And inside SynthV, I’ve found the the “br” syllable. “br1” and “brl” don’t work. Are there any others?

Koharu Rikka AI voicebank can use “br”.
Koharu Rikka Standard voicebank does not have built-in breath sounds, so it cannot be used by “br+numbers”.
(Translate with translator)