B n 10

B n 10B n 10B n 10B n 10B n 10B n 10
B n 10B n 10B n 10B n 10B n 10B n 10
B n 10B n 10B n 10B n 10B n 10B n 10B n 10B n 10B n 10B n 10B n 10B n 10B n 10B n 10B n 10B n 10B n 10B n 10B n 10B n 10B n 10B n 10B n 10B n 10B n 10B n 10B n 10B n 10B n 10B n 10B n 10B n 10B n 10B n 10B n 10B n 10