For words that have only 3 letters, there isn't a 4th letter. By way of example with the word “incorporate”, there aren't any additional letters afterwards and so needs to be the word "insert". The word “addict” is during the BIP39 wordlist however , you would have utilized “addi” for https://bookmarkshq.com/story20491012/5-essential-elements-for-bip39-explained