Why would the configuration be that way? "The aisles in this section are between the first and second seats and between the third and fourth seats of each row." That means that the configuration Window | A | Aisle | B | C | Aisle | D | Window is correct
That is the configuration, however the problem requires: "If the seat is next to the window, output “window”. Otherwise, if the seat is next to the aisle, output “aisle”. If neither is true, output “neither”. "
This implies if it is both an aisle and a window, the correct answer is window. (if window print window, else if aisle print aisle, else print neither)