wyckoffs:
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- "f"
- "e"
- "f"
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- "f"
- "e"
- "f"
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- "f"
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- "f"
- "f"
- "f"
- "f"
- "f"
- "f"
- "f"
- "f"
- "f"
- "f"
- "f"
- "f"
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- "f"
- "f"
- "f"
- "f"
- "f"
- "f"
- "f"
- "f"
- "f"
- "f"
- "e"
- "e"
- "e"
- "e"