Bip39 trezor https://jsbin.com/titaniseko A BIP39 seed phrase made with correct randomness can not be guessed via brute power, since there are actually just too quite a few permutations. For words that only have 3 letters, there's no 4th letter. By way of example Using the word “include”, there isn't any https://meshbookmarks.com/story20272689/bip39-passphrase-empty-for-none-new-step-by-step-map-for-bip39-standard-https-t-me-bip39-chat