Bip39 Tool. The passphrase is just not picked with the predefined list of 2048 words – it might be any word or phrase you end up picking. BIP39 is actually a style implementation that lays out how copyright wallets produce the list of words (or "mnemonic codes") that make up https://madbookmarks.com/story18765527/bip39-word-list-pdf-https-linktr-ee-bip39-the-basic-principles-of-bip39-mnemonic