> Please what <is> the correct use of the verb suffix {X-pu'}?[...]
In a story that happens in the past, don't use {-pu'}
-pu' means it has surely happened:
vIleghpu' - I have seen him
but
wa'Hu' vIlegh
I can't really say more on that. Just don't use it too often. It does not
mean "past".
muHwI'