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"tree-puzzle" versions published in Ubuntu

Groovy-proposed (5.3~rc16+dfsg-2): universe/science
Groovy (5.2-11): universe/science
Focal (5.2-11): universe/science
Eoan (5.2-11): universe/science
Bionic (5.2-10): universe/science
Xenial (5.2-8build1): universe/science
Trusty (5.2-7ubuntu1): universe/science
Precise (5.2-7): universe/science