I'm looking at the seat selection for an upcoming flight on TG465 Airbus A350-900 and it shows only 4 seat letters options A E F K in business class. A and K are window seats with direct aisle access and E and F are 2 seats in the middle together.

But the above configuration isn't shown on the Thai website seat map (there's only 1 A350 seat map shown), which instead shows seat letters A B D E F G J K (A & K being window seats further from aisle, E & F being better for couples who want to sit next to each other, etc.)

Is there another/new configuration?