41 5
BWBWB
WBWBW
BWBWB
WBWBW
BBBWB
WBWBW
BWBWB
WBWBW
BWBWB
WBWBW
BWBWB
WBWBW
BWBWB
WBWBW
BWBWB
WBWBW
BWBWB
WBWBW
BWBWB
WBWBW
BWBWB
WBWBW
BWBWB
WBWBW
BWBWB
WBWBW
BWBWB
WBWBW
BWBWB
WBWBW
BWBWB
WBWBW
BWBWB
WBWBW
BWBWB
WBWBW
BWBWB
WBWBW
BWBWB
WBWBW
BWBWB
