For words that have only three letters, there isn't any 4th letter. For instance with the word “add”, there are no more letters Later on and thus must be the word "increase". The word “addict” is inside the BIP39 wordlist however, you would've used “addi” for “addict”. Acquiring a person https://businessbookmark.com/story4471250/facts-about-bip39-seed-phrase-github-revealed