ohayo gozaimasu = good morning
konnichiwa = good day
konbanwa = good afternoon
arigato = thank you
arigato gozaimasu = thank you very much
moshi moshi = telephone hello
sayonara = good bye (formal)
ja ne = see you (casual)
ja mata ne = see you later(???)
watashi = I or me
watashi no (insert noun) = my
tomodachi = friend
senpai = upperclassmen
i know more, but im getting bored xD