Most partner airline's premium classes earn 100 % of miles flown and even offers a fare class bonus ranging from 25 - 100 %. (travelcodex.com)
Technically, I think they're up to four since this is a second booking class bonus. (travelcodex.com)
As you get ticket class bonuses which vary from airline to airline it is not so easy to ascertain if you have been credited the right number of miles. (onemileatatime.boardingarea.com)