Voice of Past Perfect Tense

Rules-

Sentence
Structure of making Past  Perfect Tense (Active Voice)
Structure of converting Past  Perfect Tense (Active Voice) to Passive Voice
Positive
Sub + Had + Verb (3rd form) + Object + Extra Words.
Obj/Sub +Had + Been + Verb (3rd form) + By + Sub/Obj +  Extra Words.
Negative
Sub + Had + Not +  Verb(3rd Form) + Obj + Extra Words.
Obj/Sub +Had + Not + Been + Verb (3rd form) + By + Sub/Obj +  Extra Words.
Interrogative
Had + Sub + Verb (3rd form) + Object + Extra Words?
Had + Obj/Sub + Been + Verb (3rd form) + By + Sub/Obj +  Extra Words?
Voice of Past Perfect Tense
Voice of Past Perfect Tense

Examples -

Active Voice
Passive Voice
I had done the work.
The work had been done by me.
She had written the letter.
The letter had been written by her.
She had informed us.
We had been informed by her.
Somebody had stolen my pen.
My pen had been stolen.
Ram had completed the work.
The work had been completed by Ram.