For words that only have three letters, there is absolutely no 4th letter. By way of example with the word “add”, there isn't any a lot more letters Later on and so need to be the word "add". The word “addict” is within the BIP39 wordlist however, you would've applied https://bookmarkleader.com/story19498758/top-latest-five-bip39-seed-phrase-mnemonics-generator-urban-news