Thanks for the response, Xismy. I would very much like to ask this question in the Chinese or Thai section. However, italki only allows me to ask questions in those language sections which are indicated on my italki profile as languages which I am learning. I am not learning Chinese or Thai, but these languages bear some similarity to Hmong from a grammatical perspective and have also had much more scholarship invested in them. There is no system of diagramming for Hmong in common usage. If such a system exists for Chinese or Thai, however, I could probably borrow most or all elements of the system and apply those elements to the Hmong language.

Would you please explain to me on why are you asking this on the Hmong languages section, instead of the Chinese or Thai section. Does your question have anything to do with learning Hmong.