重定向通用URL的正則表達式

Question

我們如何將這兩個重定向URL合併（使其泛化）爲一個。

例如：
URL1：(?i)/MathBlog/10-common-math-errors-made-by-elementary-students/ =>/mathblog/common-math-errors-made-by-elementary-students/

URL2：(?i)/MathBlog/amp/10-common-math-errors-made-by-elementary-students/ =>/mathblog/amp/common-math-errors-made-by-elementary-students/

應該成爲 URL3：(?i)/MathBlog/{regex}/10-common-math-errors-made-by-elementary-students/ =>/mathblog/{/amp}/common-math-errors-made-by-elementary-students/

{/amp}必須是可選的，I，E如果/amp可用，則附加重定向url或者忽略它。

Answer 1

如何：（我）？

(?i)(\/MathBlog(?:\/amp)?\/)10-(common-math-errors-made-by-elementary-students\/) =>$1$2

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