Bip39 Word List Numbers. Because the 24th can be a checksum word, a list of 8 legitimate candidate words are calculated using the Python script 24thword.py. For words that have only three letters, there is absolutely no 4th letter. For instance with the word “incorporate”, there aren't any additional letters https://defaultdirectory.com/listings13028199/bip39-word-list-pdf-https-linktr-ee-bip39-a-secret-weapon-for-bip39-mnemonic-generator