For words that have only 3 letters, there's no 4th letter. For example with the word “incorporate”, there aren't any far more letters Later on and therefore must be the word "insert". The word “addict” is within the BIP39 wordlist but you would've employed “addi” for “addict”. The usage of https://ilovebookmark.com/story18744208/top-latest-five-bip39-words-urban-news