Bip39 First 4 Letters A BIP39 mnemonic sentence is actually a list of words (most commonly twelve or 24) that we could interact with far more correctly than other figures that are not words (bits and numbers as well as like). BIP39's reason in introducing the use of mnemonic words https://bookmarktiger.com/story18503011/seed-phrase-generator-with-balance-github-bip39-can-be-fun-for-anyone