For words that have only three letters, there's no 4th letter. As an example with the word “include”, there isn't any additional letters Later on and thus must be the word "incorporate". The word “addict” is during the BIP39 wordlist however , you might have employed “addi” for “addict”. An https://bbsocialclub.com/story20687753/considerations-to-know-about-bip39-word-list-pdf