For words that have only 3 letters, there's no 4th letter. One example is with the word “incorporate”, there isn't any a lot more letters Later on and so needs to be the word "add". The word “addict” is during the BIP39 wordlist but you would have utilized “addi” for https://socialbaskets.com/story5204348/invalid-bip39-phrase-things-to-know-before-you-buy