You cannot travel via your point of origin.
"(i) The same city pairs/sectors cannot be flown more than once in the same direction."
"Additionally, only one flight to Anchorage (ANC) and one flight from Anchorage (ANC) permitted."
Otherwise you can connect through, or stopover in, a city as many times as you want provided you are not violating another rule (transcons within US, transcons within AUS, segment limits, stopover limits, etc.).
http://www.oneworld.com/documents/10...9-d346ec820edf