Bip32 and bip39 https://pastelink.net/caobqzis BIP85: A more moderen proposal enabling the deterministic derivation of various BIP39 mnemonic seeds from the grasp seed. For words that only have 3 letters, there is no 4th letter. As an example with the word “increase”, there aren't any extra letters Later on and therefore https://bookmarknap.com/story11309978/bip39-standalone-bip39-npm-no-further-a-mystery-https-t-me-bip39-chat