For words that only have 3 letters, there isn't any 4th letter. For instance with the word “include”, there are no more letters Later on and thus should be the word "incorporate". The word “addict” is inside the BIP39 wordlist however , you would have utilized “addi” for “addict”. The https://total-bookmark.com/story18902770/5-essential-elements-for-bip39-explained