YOU SAID:
Mine is thine and thine is mine
INTO JAPANESE
私のものはあなたのものであり、あなたのものは私のものです
BACK INTO ENGLISH
Mine is yours, yours belongs to me
INTO JAPANESE
私のものはあなたのものです、あなたのものは私のものです
BACK INTO ENGLISH
Mine belongs to you, your belongs to me
INTO JAPANESE
私のものはあなたのものです、あなたのものは私のものです
BACK INTO ENGLISH
Mine belongs to you, your belongs to me
That didn't even make that much sense in English.