B | B | B | B | B | B | B | B | B | B | ||
A | B | B | B | B | B | B | B | B | B | ||
A | A | B | B | B | B | B | B | B | B | ||
A | A | A | B | B | B | B | B | B | B | ||
A | A | A | A | B | B | B | B | B | B | ||
A | A | A | A | A | B | B | B | B | B | ||
A | A | A | A | A | A | B | B | B | B | ||
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A | A | A | A | A | A | A | A | B | B | ||
A | A | A | A | A | A | A | A | A | B | ||
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