YOU SAID:

The rocket would have been nice but it is a good thing.

INTO JAPANESE

ロケットは良かったでしょうが、それは良いことです。

BACK INTO ENGLISH

The rocket would have been nice, but that was good.

INTO JAPANESE

ロケットは良かったでしょうが、それは良かったです。

BACK INTO ENGLISH

The rocket would have been good, but it was good.

INTO JAPANESE

ロケットは良かったのですが、良かったです。

BACK INTO ENGLISH

The rocket was good, but it was good.

INTO JAPANESE

ロケットは良かったが、良かった。

BACK INTO ENGLISH

The rocket was good, but it was good.