Bip39 derivation path https://telegra.ph/Producing-Custom-Bitcoin-Addresses-A-Take-A-Look-At-BIP39-Strategies-06-28 BIP85: A more moderen proposal enabling the deterministic derivation of many BIP39 mnemonic seeds from the master seed. For words that only have three letters, there's no 4th letter. For instance With all the word “increase”, there aren't any additional letters afterward... https://bookmarkangaroo.com/story20561179/bip39-seed-phrase-list-the-single-best-strategy-to-use-for-bip39-word-list-pdf-https-x-com-tundra838554