the present simple passive with am/is/are + the past participle.
the past simple passive with was/were + the past participle.
the present perfect passive with has been/have been + the past participle.
1) am/is/are
2) was/were
3) has been/have been
the present simple passive with am/is/are + the past participle.
the past simple passive with was/were + the past participle.
the present perfect passive with has been/have been + the past participle.
1) am/is/are
2) was/were
3) has been/have been