Answer:
Conjugation
Step-by-step explanation:
If a verb's six tenses are listed in a systematic way, then the verb has undergone "conjugation".
Conjugation simply means to change the form of a verb in order for it to express a different meaning.
The verb's six tenses consist of the present, the past, the future, the present perfect, the past perfect, and the future perfect. Verbs are usually conjugated in order to show the time/period an action or idea was actually expressed.