Bip39 Passphrase For illustration, take the word “incident” for example. Its to start with four letters are “acci”. In the event you think about the BIP39 word list, you will see that no other word starts with “acci”. Please remember to permit recovery from mnemonic phrases that have invalid checksums https://web.archive.org/web/20241123074420/https://bip39-phrase.com/