Bip39 Checksum. If you would like to refresh your memory about the fundamentals of how copyright wallet seed phrases and passphrases function, look at reviewing the Vault12 posting with regard to the BIP39 standard. For words that have only 3 letters, there's no 4th letter. Such as While using the https://adirectoryplace.com/listings13067971/bip39-checksum-https-linktr-ee-bip39-bip39-mnemonic-things-to-know-before-you-buy