An 18-word mnemonic phrase raises security by adding extra words into the sequence. In this article’s an example: This text explains BIP39, the standard that defines how seed phrases are made, and summarizes how BIP32 and BIP44 standards allow wallets to supercharge seed phrases to assist many far more keys. https://macrobookmarks.com/story19288410/5-simple-techniques-for-bip39-word-list-pdf