YOU SAID:
i didn't do what i did do when i didn't
INTO JAPANESE
私は私がしなかったときに私がしたことをしませんでした
BACK INTO ENGLISH
I didn't do what I did when I didn't
INTO JAPANESE
私がしなかったときに私がしたことをしませんでした
BACK INTO ENGLISH
Didn't do what I did when I didn't
INTO JAPANESE
私がしなかったときに私がしたことをしなかった
BACK INTO ENGLISH
Didn't do what I did when I didn't
You've done this before, haven't you.