YOU SAID:
Hello. Bye bye. Hi and bye.
INTO JAPANESE
こんにちは。バイバイ。こんにちは、さようなら。
BACK INTO ENGLISH
Hello. Bye bye. Hello, good bye.
INTO JAPANESE
こんにちは。バイバイ。こんにちは、さようなら。
BACK INTO ENGLISH
Hello. Bye bye. Hello, good bye.
That didn't even make that much sense in English.