YOU SAID:
If everyone has a jazz band, they will be safe.
INTO JAPANESE
誰もがジャズバンドを持っていれば、彼らは安全でしょう。
BACK INTO ENGLISH
If everyone had a jazz band, they would be safe.
INTO JAPANESE
誰もがジャズバンドを持っていたら、彼らは安全だろう。
BACK INTO ENGLISH
If everyone had a jazz band, they would be safe.
You've done this before, haven't you.