How can a url change while reading the same article in wordpress

I saw a blog in which the url is automatically changing while reading the content.Please refer to the example below.

Example

If the actual url for the post is www.blablablabla.com/articlereading
while i read this article in between half the article it changes automatically to www.blablablabla.com/articlereading-1 and after some more it changes to www.blablablabla.com/articlereading-2.

Can you please help me how to implement this in wordpress

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