For words that have only 3 letters, there isn't a 4th letter. By way of example with the word “increase”, there aren't any a lot more letters Later on and thus should be the word "insert". The word “addict” is while in the BIP39 wordlist but you might have used https://socialclubfm.com/story9304732/facts-about-bip39-seed-phrase-word-list-revealed