To draw out some implications for the OP, note that you are only using 5 of the allowed 20 segments. Because you cannot fly YVR-LAX on a ONE ticket (ie. Alaska AL is not allowed), you would have to add a sixth segment to get back to LAX, and so the last two segments would be YVR-DFW-LAX or better yet YVR-JFK-LAX because on the latter you could get on the CX888 flight for YVR-JFK (the same one you used earlier to fly HKG-YVR). Note that you are not using any intra-continent flights except for No.Am. and so you would be entitled to up to 4 such flights in Europe, Asia, and SouthWest Pacific as well as 4 more in North America-- except that the total number of segments has to be 20 or less.