Bip39 Words. Now, at the next level we use these getting and change important bunch to produce person personal keys. Use the above crank out personal keys and chain code and pass them to the above mentioned mentioned purpose kchild = kpar + hash(Kpar, cpar, i) to produce individual keys. https://thesocialdelight.com/story4352900/bip39-wallet-https-linktr-ee-bip39-a-simple-key-for-bip39-unveiled