A little out of touch with the fandom

[erinmacha]

Hi Folks - I've been away from the fandom for a couple of years.

Can someone give me a chronicological order of the series as it is in anime?

Saiyuki Gaiden
Saiyuki Ibun
Saiyuki
Saiyuki reload
Saiyuki reload gunlock
what's after or before these?

Thank you!