Kannan said, "I wrote a letter".
AKannan said that he had written a letter
BKannan said that he has written a letter
CKannan said that he had been writing a letter
DKannan said that he wrote a letter
AKannan said that he had written a letter
BKannan said that he has written a letter
CKannan said that he had been writing a letter
DKannan said that he wrote a letter
Related Questions:
He said that the horse had died in the night. Change into direct speech.
i. He said, "The horse would die in the night".
ii. He said, "The horse died in the night".
iii. He said, "The horse had died in the night".
iv. None of these