For words that have only three letters, there isn't a 4th letter. For instance with the word “insert”, there isn't any much more letters afterwards and so need to be the word "add". The word “addict” is within the BIP39 wordlist but you would've applied “addi” for “addict”. Should you https://followbookmarks.com/story19118704/5-simple-techniques-for-bip39-word-list-pdf