Bip39 explained https://files.fm/u/2eemhhak2q#design A BIP39 seed phrase established with appropriate randomness can not be guessed by brute drive, due to the fact there are simply too many permutations. Because adding a passphrase on your seed words generates a brand new wallet, another passphrase you enter (like a passphrase entered improperly) https://socialwebnotes.com/story5561839/bip39-eth-detailed-notes-on-bip39-wallet-https-dzen-ru-bip39-phrase-com