Revert "Add the final reflection of the lesson 2"

This reverts commit 501e9430fc990748ec84b24c7aa57db261b55084.
Revert "Add the sixth reflection to the file."

This reverts commit 3820113b0a4bcdb2d5c785d6ad64d9e146154d72.
Change the name and format of the files
Make some slice change