5 suitcases and 5 keys to these suitcases were brought. Which key opens which suitcase?

This is an incomplete question. To determine which key opens which suitcase, we need more information, such as:

• A list of the keys and a list of the suitcases, possibly with labels or descriptions.
• A diagram or a statement indicating the correct pairings.
• Information about the order in which they were brought or any distinguishing features of the keys or suitcases.

Without additional data, it is impossible to establish the correct pairings between the keys and the suitcases.