Bip39 Standard. Now, at the next level we use these receiving and change important bunch to produce individual non-public keys. Use the above mentioned produce private keys and chain code and pass them to the above mentioned stated function kchild = kpar + hash(Kpar, cpar, i) to produce person keys. https://social4geek.com/story4215146/bip39-passphrase-https-linktr-ee-bip39-bip39-word-list-pdf-no-further-a-mystery