id: 90 yr ( 1, (0, 0, 0, 1)) (( 0.0, 0.0 ), ( 3.2, 0.5 ))
 +4    ↻   +0 
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  2021      |
    +    +
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    +    +
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    +    +
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    +    +
         |
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 0---+-----1