My seat assignments on my ticket to SYD on AC 033/034 and also on that to HKG on AC 007/008 as 18K, 19K, 20K, 20A. I wonder if anyone know which of this window seat(s) do(es) not actually have a window. My mind barely recalled that one of these three rows does not have a window, which made me extremely uncomfortable for the long flight from YYZ. The online seat map does not show the window locations. I appreciate if anyone could help on this.