Bip39 protocol https://writeablog.net/ipennywpzc/the-ultimate-overview-to-offline-bip39-generators-remain-secure BIP85: A more recent proposal letting the deterministic derivation of various BIP39 mnemonic seeds from the learn seed. For words that only have 3 letters, there is no 4th letter. For example While using the word “insert”, there are no extra letters afterwards and so have to https://bookmarkspedia.com/story5759508/what-is-bip39-passphrase-indicators-on-bip39-ian-coleman-you-should-know-https-t-me-bip39-chat