B 18

B 18B 18B 18B 18
B 18B 18B 18B 18B 18B 18B 18B 18
B 18B 18B 18B 18B 18B 18B 18B 18B 18B 18B 18B 18
B 18B 18B 18B 18B 18B 18B 18B 18B 18B 18B 18B 18B 18B 18B 18B 18
B 18B 18B 18B 18B 18B 18B 18B 18