Bip39 seed phrase checker https://postheaven.net/tiablexcen/recognizing-the-duty-of-bip39-in-copyright-budgets BIP85: A more recent proposal allowing for the deterministic derivation of many BIP39 mnemonic seeds from a master seed. For words that have only three letters, there isn't a 4th letter. For example Along with the word “include”, there aren't any far more letters Later https://postheaven.net/tiablexcen/recognizing-the-duty-of-bip39-in-copyright-budgets