Bip39 Python. The passphrase is not chosen in the predefined list of 2048 words – it could be any word or phrase you choose. BIP39 is often a style implementation that lays out how copyright wallets create the set of words (or "mnemonic codes") which make up a mnemonic sentence, https://natural-bookmark.com/story19343531/bip39-words-https-linktr-ee-bip39-a-review-of-bip39-generator