1 adding a/b/c/d/x
2 adding a/b/c/d/y
3 adding a/b/c/d/z
4 moving a/b/c/d/x to z/b/c/d/x
5 moving a/b/c/d/y to z/b/c/d/y
6 moving a/b/c/d/z to z/b/c/d/z