|--------3------------------------3---------------------|
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|----6-6-6-6---3-3--------------------------------------|
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|----6-6-6-6---3-3--------------------------------------|
|----------------------6-6-6-6---3-3--------------------|
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|----6-6-6-6---3-3----------6-6-6-6---3-3---------------|
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|----6-6-6-6---3-3----------6-6-6-6---3-3---------------|
|-------------------------------------------------------|
|-------------------------------------------------------|
|-------------------------------------------------------|
|-------------------------------------------------------|
|-------------------------------------------------------|
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|