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4.0 International License (CC BY-NC 4.0).

You are free to use, share, and adapt this software for non-commercial
research and educational purposes, provided that appropriate attribution
is given to the authors and the source.

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permission from the authors. The authors retain all commercial rights.

To view a copy of this license, visit:
https://creativecommons.org/licenses/by-nc/4.0/
