Astra's asymmetric word $(0,1,-1,5,3,2,-15,-11,-5,-99,-115,-55)$ is tree-safe, with $3$ before $2$

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Astra's asymmetric word $(0,1,-1,5,3,2,-15,-11,-5,-99,-115,-55)$ is tree-safe, with $3$ before $2$ · Prove2Me