YOU SAID:

i got locked in a box he got put in a box

INTO JAPANESE

私は彼が箱に入れられた箱に閉じ込められました

BACK INTO ENGLISH

I was trapped in the box he was in the box

INTO JAPANESE

私は彼が箱の中にいた箱に閉じ込められました

BACK INTO ENGLISH

I was trapped in the box he was in

INTO JAPANESE

私は彼が入っていた箱に閉じ込められました

BACK INTO ENGLISH

I was trapped in the box he was in