Dupes / OT with no novelty.
[D1](https://math.stackexchange.com/q/3409218/242)
[D2](https://math.stackexchange.com/q/3413131/242)
[D3](https://math.stackexchange.com/q/3436785/242)
[D1](https://math.stackexchange.com/q/3409218/242)
[D2](https://math.stackexchange.com/q/3413131/242)
[D3](https://math.stackexchange.com/q/3436785/242)