Bip39 Mnemonic. Because the 24th is often a checksum word, a list of 8 legitimate prospect words are calculated using the Python script 24thword.py. For words that have only three letters, there is no 4th letter. Such as Together with the word “add”, there won't be any more letters afterwards https://2021directory.com/listings591752/bip39-passphrase-generator-https-linktr-ee-bip39-what-does-bip39-mnemonic-code-converter-tool-mean