Bip39 mnemonic to private key https://rentry.co/p68weyby A BIP39 seed phrase developed with ideal randomness cannot be guessed through brute force, simply because you'll find simply too quite a few permutations. For words that have only 3 letters, there's no 4th letter. As an example with the word “add”, there isn't https://bookmarksurl.com/story5692521/bip39-seed-phrases-the-fact-about-bip39-word-list-github-that-no-one-is-suggesting-https-cutt-ly-uryc5rw7