About public key.

What about public key? You wrote the words "About public key" and then you didn't actually write ANYTHING about public keys at all.

That is about UNCOMPRESSED VERSION 1 addresses (also known as uncompressed P2PKH addresses).

As I said, there are many types of addresses.

That link describes 2 ways of representing a private key (WIF and Mini-key) as well as an additional way of storing and generating keys (HD).

This is impossible.

What is impossible?

Thanks for help to learn bitcoin

Sorry but i'm not "Guru" in this questions.. but I try learn it.
I think collision is impossible or very low probablity to happen this.