B1 3 b1 4

B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4
B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4
B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4B1 3 b1 4