Someone good in English grammar please help me in this task, because I have difficulties.

Someone good in English grammar please help me in this task, because I have difficulties. I would really appreciate it, also when its just part of the solution.

TASK: (you need to draw tree-structures!)

There are a class of elements inside the nominal phrase which seem to be determiners, but which are not in complementary distribution with determiners. As they always follow determiners, they are called post-determiners.
How can post-determiners accomodated into the DP analysis of nominal phrases? Here are some points you need to consider to provide an accurate analysis:

a.) Post-determiners, unlike real determiners, can often be modified:
i.) so many men *so the men
ii.) very many men *very that man
iii.) infinitely many men *infinitely some men

b.) There can only be one post-determiner, unlike adjectival modifiers which accompany a noun:
i.) a tall man a tall strong man a toll strong ugly man
ii.) *few several books

c.) Post-determiners always precede adjectival modifiers:
i.) several tall men *tall several men