how do i know when to use:

Question

meem heh
meem wow
heh meem alaf
heh meem
in a sentence? Is there a "trick"?

Answer 1

I know how to speak Arabic, but I don't get your question , if you rephrase it , I may understand what you mean ;)

Answer 2

meem wow
ّ هو ؟
heh meem alaf
هما ؟
heh meem
هم ؟
If that what you mean ! maybe I can explain for you !