YOU SAID:

inside you fid 12 keys

INTO JAPANESE

あなたの中に12個の鍵を入れます

BACK INTO ENGLISH

Put 12 keys in you

INTO JAPANESE

あなたに12個の鍵を入れてください

BACK INTO ENGLISH

Put you 12 keys

INTO JAPANESE

あなたに12の鍵を入れてください

BACK INTO ENGLISH

Put you 12 keys