For words that only have three letters, there's no 4th letter. For example with the word “include”, there are no additional letters Later on and thus must be the word "include". The word “addict” is within the BIP39 wordlist however you would've employed “addi” for “addict”. In this post we’ll https://pr1bookmarks.com/story19138000/detailed-notes-on-copyright-wallet-seed-phrase-out-of-bip39