For words that only have 3 letters, there is not any 4th letter. For example with the word “insert”, there won't be any a lot more letters Later on and therefore have to be the word "include". The word “addict” is while in the BIP39 wordlist however, you would have https://easiestbookmarks.com/story19031786/considerations-to-know-about-bip39-word-list-pdf