If you look to the right of this photo of the 777-200 cabin, you can guess where the missing window is relative to 11A.
http://cdn-www.airliners.net/aviatio.../3/1377343.jpg
or this one:
http://cdn-www.airliners.net/aviatio.../5/1384561.jpg
which has the shade down in 11K, probably indicating that window is right next to the seat.