用于在并行目录结构之间移动的cd别名

Question

假设我有以下目录结构（变量是z或y或x或w目录）：

/a/b/c/d/e/z/f/g/h/i/j/k
/a/b/c/d/e/y/f/g/h/i/j/k
/a/b/c/d/e/x/f/g/h/i/j/k
/a/b/c/d/e/w/f/g/h/i/j/k

我如何为cd命令编写别名（在bash中），这样当我在

时

/a/b/c/d/e/w/f/g/h or in
/a/b/c/d/e/w/f/g/h/i/j or in
/a/b/c/d/e/w/f/g/h/i/j/k

并输入：

cd z

分别 带我进入

/a/b/c/d/e/z/f/g/h or in
/a/b/c/d/e/z/f/g/h/i/j or in
/a/b/c/d/e/z/f/g/h/i/j/k

如果我输入：

cd y

分别 带我进入

/a/b/c/d/e/y/f/g/h or in
/a/b/c/d/e/y/f/g/h/i/j or in
/a/b/c/d/e/y/f/g/h/i/j/k

当然如果我输入：

cd w

它应该让我离开我（已经在那里）。