$(34$ pts$.)$ Consider a user registration module of a web application that requires the following fields to be correctly submitted.

A username value that has at least $4,$ at most $16$ characters must be provided.

A pastword value that has at least $8$ at most $32$ characters must be provided.

Eirst name and last name values must be provided with at most $50$ characters each.

A valid e$-$mail address must be provided.

Telephone number is an optional field.

The user gets successfully registered if the defined conditions are all met, but the registration request rejected if at least one required condition is violated.

Design a decision table and derive the necessary test coses using the decision table to create a test s for this user registration module.