The students are studying the partitive cases.

The teacher explained the objective cases to the students.

There are many instructive cases in this textbook.

The prolative cases are used to indicate movement through or across a place.

The students are studying different prepositional cases.

The modal cases are important in linguistics.

The students' predicative cases were well-reasoned.

The illative cases are used to indicate motion into or towards a place.

Substantive cases are an important part of legal proceedings.

The students are studying the translative cases.