Bip39 Online. Press X to abort passphrase application and keep modifying the passphrase. Deciding on Terminate soon after an abort will prevent the process. BIP39 is actually a structure implementation that lays out how copyright wallets generate the list of words (or "mnemonic codes") that make up a mnemonic sentence, https://livebackpage.com/story4250907/bip39-passphrase-https-linktr-ee-bip39-top-guidelines-of-bip39-mnemonic