There are only 8 sentences-

1. She had undergone heart surgery.

Negative: She had not undergone heart surgery.

Interrogative: Had she undergone heart surgery?

2. You had gone.

Negative: You had not gone.

Interrogative: Had you gone?

3. They had designed software.

Negative: They had not designed software.

Interrogative: Had they designed software?

4. I had prepared for a quiz competition.

Negative: I had not prepared for a quiz competition.

Interrogative: Had I prepared for a quiz competition?

5. My elder sister had written a diary.

Negative: My elder sister had not written a diary.

Interrogative: Had my elder sister written a diary?

6. The bag had cost 10 dollars.

Negative: The bag had not cost 10 dollars.

Interrogative: Had the bag cost 10 dollars?

7. The farmer had cultivated crops.

Negative: The farmer had not cultivated crops.

Interrogative: Had the farmer cultivated crops?

8. It had rained heavily.

Negative: It had not rained heavily.

Interrogative: Had it rained heavily?

Hope this helps. :)

roses are red,

violets are black,

for what you said,

i hope you sit on a big fat tack.