What I have said, will serve as a hint, which will enable you to see the impropriety of adopting the "possessive case.
It will be perceived that we have abandoned the use of the "possessive case," a distinction which has been insisted on in our grammars; and also changed the names of the other two.
The subject may be modified by a substantive in the +possessive case+.
If they do, they are all of them pronouns, and nothing else; all found in the possessive case, and nowhere else.
Respecting the possessive case of the simple personal pronouns, there appears among our grammarians a strange diversity of sentiment.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "possessive case" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.