whe you will find something how you check it on correct ?
Exactly!...how the heck do we check?
It's fairly simple.
You convert your 8 word/32 char, CamelCase English phrase with no special symbols into a private key/address (ie. brain wallet)... if you get the address:
179sxfh6rw6bHSo5wVUhLP96k46QaEzVP then you go it correct. If you don't get that address, then you're wrong.