For words that only have three letters, there's no 4th letter. By way of example with the word “increase”, there isn't any far more letters Later on and thus must be the word "increase". The word “addict” is from the BIP39 wordlist however you might have used “addi” for “addict”. http://zanevnex175.lowescouponn.com/unlocking-the-power-of-bip39-an-extensive-consider-word-lists-and-secure-pocketbooks