For words that only have 3 letters, there is not any 4th letter. One example is with the word “include”, there are no additional letters afterwards and so need to be the word "include". The word “addict” is during the BIP39 wordlist however you would've utilized “addi” for “addict”. gravity https://listingbookmarks.com/story18976876/little-known-facts-about-bip39-words