B spb

B spbB spbB spbB spbB spbB spb
B spbB spbB spbB spbB spbB spb
B spbB spbB spbB spbB spbB spbB spbB spbB spbB spbB spbB spbB spbB spbB spbB spbB spbB spbB spbB spbB spbB spbB spbB spbB spbB spbB spbB spbB spbB spbB spbB spbB spbB spbB spbB spb