YOU SAID:

The couch he had had had had a bad effect on the cat.

INTO JAPANESE

彼が持っていたソファは猫に悪影響を及ぼした。

BACK INTO ENGLISH

The sofa he had had a negative effect on the cat.

INTO JAPANESE

彼が持っていたソファは猫に悪影響を及ぼした。

BACK INTO ENGLISH

The sofa he had had a negative effect on the cat.