15 14 13 12.3 12.2 12.1 11.2 11.1p 11.1q 11.2 21.1 21.2 21.3 22.1 22.2 22.3 23.1 23.2 23.3 24.1 24.2 24.3 25.1 25.2 25.3 26.1 26.2 26.3