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