Japenese Language - Word order

Ohayou. Good morning.
Konnichiwa. Good afternoon.
Konbanwa. Good evening.
Nanika atta? What's up?
Dou shiteru? How's everything?
Kawatta koto aru? What's new?
Tadaima. I'm back (home).
Ittekimasu. I'm leaving.
Oyasuminasai. Good night.
Sayonara. Good-bye.