YOU SAID:

I bet this will not work

INTO JAPANESE

これはうまくいかないに違いない

BACK INTO ENGLISH

This must work

INTO JAPANESE

これは動作するはずです

BACK INTO ENGLISH

This should work

INTO JAPANESE

これが役に立つ

BACK INTO ENGLISH

This should work.

INTO JAPANESE

これが役に立つ

BACK INTO ENGLISH

This should work.