YOU SAID:

I wonder why we do this back and forth

INTO JAPANESE

なぜこれを行ったり来たりするのだろうか

BACK INTO ENGLISH

Why go back and forth

INTO JAPANESE

なぜ行き来するのか

BACK INTO ENGLISH

Why come and go

INTO JAPANESE

なぜ行き来するのか

BACK INTO ENGLISH

Why come and go