16 A B C D E F
15 F E D C B A
17 F E D C B A
18 A B C D E F
19 F E D C B A
20 F E D C B A
10 F E D C B A
11 F E D C B A
21 F E D C B A
22 ....................
A330 [ 3 + 3 + 3 ]
23 A B C D F G H J K
37 K J H G F D C B A
24 A B C D F G H J K
38 K J H G F D C B A
25 A B C D F G H J K
39 ......................