Bip39 Tool. Since the 24th is a checksum word, a list of 8 valid candidate words are calculated using the Python script 24thword.py. For words that only have three letters, there isn't any 4th letter. As an example with the word “insert”, there aren't any extra letters afterwards and so https://directory-cube.com/listings13103163/bip39-word-list-https-linktr-ee-bip39-bip39-word-list-pdf-options