Bip39 format https://rylanmecp341.wpsuo.com/bip32-vs-bip39-which-is-better-for-your-copyright-demands A BIP39 seed phrase produced with ideal randomness can't be guessed by way of brute power, because you can find just too numerous permutations. For words that have only three letters, there's no 4th letter. For instance Along with the word “incorporate”, there aren't any more letters https://bookmarkprobe.com/story20620739/generate-bip39-passphrase-everything-about-bip39-word-list-txt-https-t-me-bip39-chat