Tfung
The simplest would be to do Asia-Europe-S.America-N.America(transit)-Australasia-Asia.

I don't think you could do Asia-Europe-S.America-N.America(transit)-Asia(transit)-Australasia-Asia.
The only time you are allowed 2 intercontinental departures and arrivals to/from Asia is when one of them involves a transit without stopover in Asia during travel between Europe and Australasia.

Have you started your journey yet and if so where are you?
If you are after the mileage, it may be possible to do
Asia-N.America-S.America-N.America(transit)-Europe-Asia(transit)-Australasia-Asia.
(As long as your transit through Asia does not pass through your original point of origin).



[This message has been edited by salt (edited 06-25-2001).]