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X o o o o o o o o o o . . . x x . . . x x . x x x x . x x . . x x . x x x x x . . x x x . . x . x . . . x x . x . . . . x x x . x . x x . . x x |
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X o o o o o o o o o o . . . . . x . . . . . . x x x . . . . x . . . x x x x x x x x x . x . |
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o o o o o o o o o o o . . |
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X o o o o o o o o o o . x x . . . . x x x . x x x . . x x x x . x x x x . x x |
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