YOU SAID:

Jack, while John had had had, had had had had.

INTO JAPANESE

ジャックはジョンが持っていたが、持っていた。

BACK INTO ENGLISH

Jack had John, but he had.

INTO JAPANESE

ジャックにはジョンがいましたが、彼にはありました。

BACK INTO ENGLISH

Jack had John, but he had.