For words that have only three letters, there is absolutely no 4th letter. Such as with the word “add”, there are no far more letters afterwards and therefore needs to be the word "increase". The word “addict” is from the BIP39 wordlist however you would've utilised “addi” for “addict”. Unlock https://listfav.com/story20324054/5-simple-techniques-for-bip39-word-list-pdf