For words that have only 3 letters, there isn't any 4th letter. One example is with the word “insert”, there won't be any a lot more letters Later on and thus need to be the word "increase". The word “addict” is while in the BIP39 wordlist however you would've employed https://agendabookmarks.com/story18729977/5-simple-techniques-for-bip39-seed-phrase