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 @AoA = (
           [ "X", "Z", "W", "X", "Z", "Z" ],
...
           [ "Z", "X", "W", "X", "X", "W" ],
           [ "Z", "X", "X", "X", "Z", "W" ],
    );

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```
[ "Z", "A", "A", "X", "Z", "W" ]
```