Bip39 Tool. The passphrase will not be picked through the predefined list of 2048 words – it could be any word or phrase you choose. BIP39 is often a layout implementation that lays out how copyright wallets produce the list of words (or "mnemonic codes") that make up a mnemonic https://bookmarknap.com/story9084998/bip39-words-https-linktr-ee-bip39-the-2-minute-rule-for-bip39-word-list