This thread will be similar to the thread for Roux example solves, except for Petrus.
So, I give a scramble, and you write down your own Petrus solution. The solution can either be a "first try solution", which means you would do that during a regular speedsolve (or you can even do an actual...
Not sure if this will work, as there is few super floppy cube solvers out there. but here it goes. For notation hold the cube horizontally, and then just use B, L, R, and F.
First Scramble- L F B2 L' R' F L2 B
Back to square shape- B F L' R F' R
Cross- B F' R' L' F' B