For words that have only three letters, there isn't a 4th letter. Such as with the word “include”, there aren't any much more letters afterwards and thus need to be the word "incorporate". The word “addict” is from the BIP39 wordlist however , you might have utilized “addi” for “addict”. https://livebackpage.com/story4364208/helping-the-others-realize-the-advantages-of-bip39-mnemonic-phrase-tool