Is it possible to export the paths of custom AI brushes to SVG format?

Question

Adobe Illustrator

Hello, this is a question. For work, it is necessary that in the SVG format there must be paths, not curves. (So ​​that they can then be "reproduced" through special software)
SVG paths by default are supported only by the simplest tool - a pencil with a basic brush, that's the only way.


I would like to draw with other brushes, such as these.



But when exporting, they are all converted to curves and the paths disappear.



Actually the question is: is it possible to somehow save the paths of custom brushes after converting to SVG format, or is it impossible to do this?
To be like this:


Thanks in advance for your replies