5 x1 3 x1 7 x1 11 x1 9 x2 A(14) 2 x1 1 x2 1 6 x1 4 x1 2 10 x4 8 x1 3 B(12) 4 B 9 9 B 5 A 4 6 5 A 2 2 5 6 7 10 10 10 10 8 8 A 3 1 A 1 A A A A OK