The past perfect (had + a past participle) shows one action as complete when another action happens.
By the time we arrived at the store, it had closed.
"Had awoken" is the past perfect tense.
The past perfect tense is 'had started'.
The past perfect tense of begin is had begun.
The past perfect tense of wake is had woken.
The past perfect tense of creep is had crept.
If "perfect" means "past" as in Past Tense, that is WAS/WERE. If you mean "Present Perfect", it's HAVE/HAS BEEN.
Existed is the past tense. The past perfect tense is had existed.
The past tense is bled, and the past perfect tense is had bled.
The past tense of sit is sat; the past perfect tense is had sat.
The past perfect tense is "had confronted".
The past perfect tense is had chosen.
The past perfect tense is had burned.
The past perfect tense is had set.
The past perfect tense is had rung.
The past perfect tense of hope is had hoped.
The past perfect tense is had submitted.
The past perfect tense of "learn" is "had learned."