Bip39 add private key https://giphy.com/channel/ebliciwsah A BIP39 seed phrase established with suitable randomness can't be guessed as a result of brute power, because you'll find just too lots of permutations. For words that have only three letters, there's no 4th letter. For example While using the word “include”, there isn't https://www.youtube.com/channel/UCUpxfyTJ0fb78SQ55hU6OCw