YOU SAID:

why do you think i did the thing that i did to him?

INTO JAPANESE

なぜあなたは私が彼にしたことをしたと思いますか？

BACK INTO ENGLISH

Why do you think I did what he did to him?

INTO JAPANESE

どうして私が彼にしたことを彼にしたと思いますか？

BACK INTO ENGLISH

Why do you think he did what he did to him?

INTO JAPANESE

どうしてあなたは彼が彼にしたことを彼にしたと思いますか？

BACK INTO ENGLISH

Why do you think he did what he did to him?