Bip39 number of words https://hubpages.com/@lefwenuuyr BIP85: A newer proposal allowing the deterministic derivation of a number of BIP39 mnemonic seeds from a master seed. For words that only have 3 letters, there is no 4th letter. As an example Along with the word “add”, there isn't any much more letters https://socialdummies.com/story4989940/bip39-mnemonic-to-private-key-the-smart-trick-of-bip39-word-list-github-that-no-one-is-discussing-https-x-com-tundra838554