YOU SAID:
cat is good cat not bad good cat
INTO JAPANESE
猫は良い猫は良くない良い猫ではありません
BACK INTO ENGLISH
Cats are not good cats are good cats are not good
INTO JAPANESE
猫は良くない猫は良い猫は良くないです
BACK INTO ENGLISH
Cats are not good cats are good cats are not good cats
INTO JAPANESE
猫は良い猫ではない良い猫は良い猫ではありません良い猫ではありません
BACK INTO ENGLISH
Cats are not good cats Good cats are not good cats are not good cats
INTO JAPANESE
猫は良い猫ではない 良い猫は良くない猫は良い猫ではありません
BACK INTO ENGLISH
Cats are not good cats Good cats are not good cats are not good cats
Come on, you can do better than that.