Bip39 mnemonic to private key https://www.storeboard.com/blogs/ai-for-small-business/browsing-the-globe-of-bitcoin-addresses-the-value-of-bip39/6240727 3a43fced052690635cc9fdce418514528b000dff3eaa5b986ea7be809062e775f2fe99c76733ff200b56fb70cac7c6ac7818b1e8139192a70fe274f5bf57fa46 For words that only have three letters, there isn't a 4th letter. By way of example Using the word “add”, ... https://pukkabookmarks.com/story20594845/bip39-python-what-does-bip39-generator-mean-https-linktr-ee-bip39