For words that have only three letters, there is not any 4th letter. For example with the word “include”, there isn't any far more letters Later on and thus needs to be the word "include". The word “addict” is in the BIP39 wordlist but you would've utilized “addi” for “addict”. https://bookmarksaifi.com/story18980081/examine-this-report-on-bip39-passphrase