For words that only have 3 letters, there is no 4th letter. For example with the word “include”, there isn't any far more letters Later on and thus needs to be the word "increase". The word “addict” is during the BIP39 wordlist but you would've employed “addi” for “addict”. To https://tripsbookmarks.com/story18848526/5-simple-techniques-for-bip39-word-list-pdf