For words that only have 3 letters, there isn't a 4th letter. For instance with the word “include”, there aren't any a lot more letters afterwards and thus should be the word "include". The word “addict” is in the BIP39 wordlist but you would've utilized “addi” for “addict”. bip39-phrase.com can https://bookmarkcitizen.com/story18827852/the-definitive-guide-to-bip39-seed-phrase