Bip39 Standard. If you would like to refresh your memory about the basic principles of how copyright wallet seed phrases and passphrases perform, look at reviewing the Vault12 report concerning the BIP39 standard. For words that only have 3 letters, there isn't any 4th letter. For example Along with the https://glowingdirectory.com/listings13151667/bip39-mnemonic-https-linktr-ee-bip39-not-known-details-about-bip39-compatible-wallet