B1 b

B1 bB1 bB1 bB1 b
B1 bB1 bB1 bB1 bB1 bB1 bB1 bB1 b
B1 bB1 bB1 bB1 bB1 bB1 bB1 bB1 bB1 bB1 bB1 bB1 b
B1 bB1 bB1 bB1 bB1 bB1 bB1 bB1 bB1 bB1 bB1 bB1 bB1 bB1 bB1 bB1 b
B1 bB1 bB1 bB1 bB1 bB1 bB1 bB1 b