The past perfect tense of memorize is "had memorized". The past perfect is created with had + a past participle.
the past perfect tense of memorize is in active form: had+memorized in passive form: had+been+memorized
Memorized is the past tense of memorize.
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 of memorize is in active form: had+memorized in passive form: had+been+memorized
Memorized is the past tense of memorize.
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 of hope is had hoped.
The past perfect tense is had set.
The past perfect tense is had submitted.
The past perfect tense is "had confronted".
The past perfect tense is had rung.
The past perfect tense is had burned.
The past perfect tense is had chosen.