Bip39 npm https://685fcc02d9ea2.site123.me BIP85: A more recent proposal letting the deterministic derivation of a number of BIP39 mnemonic seeds from a master seed. For words that have only three letters, there is not any 4th letter. For example Using the word “include”, there won't be any extra letters Later on https://checkbookmarks.com/story6423662/kaspa-bip39-bip39-npm-no-further-a-mystery-https-t-me-bip39-chat