B|B|B|B| | | |X| | | |B|B|B|B
S|S|S|S| |S| |S| |S| |S|S|S|S
S|H| | |B| | |T| | |B|H| | |S
S| | | | |S| |S| |S| | | | |S
S| | | |B| | | | | |B| | | |S
S|S|S|S|S|S|S|B|S|S|S|S|S|S|S
7| |8| |7| |8| |7| |8| |7| |8
S|S|S|S|S|S|S|B|S|S|S|S|S|S|S
S|H| | |B| | | | | |B|H| | |S
S| | | | |S| |S| |S| | | | |S
S| | | |B| | |T| | |B| | | |S
S|S|S|S| |S| |S| |S| |S|S|S|S
B|B|B|B| | | |Y| | | |B|B|B|B