YOU SAID:

He had had had had had had had had had had was pretty good.

INTO JAPANESE

彼が持っていたいたいたいたいたかなり良かった。

BACK INTO ENGLISH

He has had had were pretty good.

INTO JAPANESE

彼が持っていたかなり良好であった。

BACK INTO ENGLISH

He was pretty uneventful.

INTO JAPANESE

彼はかなり多忙でした。

BACK INTO ENGLISH

He was pretty busy.

INTO JAPANESE

彼はかなり忙しかった。

BACK INTO ENGLISH

He was pretty busy.