YOU SAID:

they can't stop eating the chickens

INTO JAPANESE

彼らはニワトリを食べるのをやめることができない

BACK INTO ENGLISH

They can't stop eating chickens.

INTO JAPANESE

彼らは鶏を食べるのを止めることができません。

BACK INTO ENGLISH

They can not stop eating chickens.

INTO JAPANESE

彼らは鶏を食べるのを止めることはできません。

BACK INTO ENGLISH

They can not stop eating chickens.