For words that have only three letters, there isn't a 4th letter. For instance with the word “include”, there won't be any much more letters afterwards and so need to be the word "include". The word “addict” is in the BIP39 wordlist however , you might have utilized “addi” for https://bookmarkcork.com/story19623399/5-simple-techniques-for-bip39-seed-phrase