For words that have only three letters, there isn't any 4th letter. One example is with the word “insert”, there isn't any a lot more letters Later on and so must be the word "increase". The word “addict” is during the BIP39 wordlist however, you might have employed “addi” for https://writeablog.net/ipennywpzc/h1-b-opening-the-power-of-bip39-exactly-how-to-produce-and-use-mnemonic